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GEORGETOWN    COLLEGE    OBSERVATORY. 


OBSERVATIONS  OF  VARIABLE  STARS 


MADE    IN   THE    YEARS    1884-1890. 


PART  I. 
THE    OBSERVATIONS. 


J.  G./HAGEN,   S.  J., 
Director  of  the  Georgetown  College  Observatory. 


WASHINGTON,  D.   C. 

1901. 


ASTRONOMY 


• 


\^A--«2\-/V  tpv>      • 


635 

ASTRONOMY" 
LIBRARY 

INTRODUCTION. 

The  following  observations  were  made  from  1884  to  1890  by  myself  and  several  assistants, 
first  in  Prairie  Du  Chien,  Wisconsin,  and  later  in  Washington.  They  were  generally  confined 
to  the  brighter  variables,  as  the  instruments  used  were  opera  glasses  and  equatorials  of  3  or  5 
inches  aperture.  The  earlier  observations  will  show  some  lack  of  experience  both  in  their 
arrangement  and  in  the  choice  of  suitable  variables  and  comparison  stars.  But  the  very  difficul- 
ties encountered  in  these  observations  bore  ample  fruit  by  showing  the  necessity  of  an  Atlas  of 
Variable  Stars,  and  by  developing  and  maturing  a  plan  for  its  construction.  As  a  matter  of 
fact  the  observations  were  only  discontinued  to  begin  work  on  the  Atlas,  in  January,  1890,  when 
a  donation  for  a  larger  instrument  was  received  by  the  Observatory. 

A  glance  at  the  observations  will  show  that  two  methods  were  employed,  viz.,  the  "  decimal 
method"  for  the  first  three  years,  and  the  "method  by  steps"  for  the  last  three.  In  the 
former  method  the  brightness  of  the  variable  is  estimated  in  tenths  of  the  interval  between  two 
comparison  stars  ;  in  the  latter,  usually  designated  as  Argelander' s,  it  is  estimated  in  steps  from 
both  comparison  stars.  The  decimal  method  supposes  a  well  established  photometric  scale  of 
comparison  stars,  while  the  latter  rests  upon  a  subjective  "step"  or  unit  of  light  difference. 
Each  method  has  its  own  difficulty  in  the  want  of  constancy  of  its  basis.  Experience  shows 
that  a  large  proportion  of  the  stars  vary  slightly  in  brightness.  Hence  any  photometric  scale 
must  contain  on  account  of  this  variation  what  are  equivalently  accidental  errors,  however  much 
its  constructor  may  have  endeavored  to  free  it  from  systematic  and  accidental  errors  on  his  own 
part.  On  the  other  hand  the  "  step  "  is  so  far  from  being  a  constant  quantity,  that  Argelander 
himself  introduced  the  technical  term  of  the  "step  value  of  the  evening." 

The  observations  as  published  show  first  the  original  estimates,  and  then  their  reduction  to 
a  fixed  scale  either  of  steps  or  of  photometric  magnitudes.  Wherever  the  observations  by  steps 
furnished  sufficient  data,  a  scale  of  steps  was  constructed  for  all  the  observations,  even  those 
made  by  the  decimal  method.  This  may  not  be  perfectly  correct,  as  the  value  of  the  steps  may, 
either  in  general  or  for  single  stars,  change  in  the  course  of  years.  Yet  it  has  seemed  preferable 
to  make  the  reductions  uniform  throughout. 

For  these  reductions  of  the  original  eetimates  to  a  scale  of  steps  Schonfeld  has  recommended 
the  use  of  both  the  arithmetical  and  the  geometrical  proportion.  The  former  is  supposed  to 
eliminate  erroneous  estimates  in  the  actual  brightness  of  the  several  stars,  and  the  latter  removes 
the  difference  of  the  step  value  of  the  evening  from  the  assumed  mean  value.  Schoenfeld  then 
advises  the  taking  of  the  arithmetical  mean  of  the  two  results  thus  obtained  (Wien,  Sitzungsber. 
vol.  42,  p.  154),  with  a  reference  to  Argelander  in  Schumacher's  Jahrbuch  (1844  p.  232).  The 
two  proportions  may  be  expressed  in  algebraic  form  as  follows.  Let  the  observed  sequence  be  : 

a  m  R  n  b, 

a  being  the  brighter  and  b  the  fainter  comparison  star  for  the  variable  JR,  and  let  the  steps  be 
counted  in  the  same  direction  as  the  magnitudes,  viz.  increasing  from  the  brighter  to  the  fainter 
stars,  then : 

/T\     T?        (a  +  m)  +  (5  —  n) 
(-1)     -K  :  — g—  — , 

n  +  m  n  -f  m  ' 

In  the  latter  formula,  which  uses,  geometrical  proportion,  the  fraction  is  what  Argelander  has 
called  "the  step  value  of  the  evening." 


4  INTRODUCTION. 

After  these  general  remarks  a  few  explanations  will  be  required  regarding  the  comparison 
stars  and  the  observations. 

The  titles  are  taken  substantially  from  Chandler's  III.  Catalogue. 

In  the  tables  of  comparison  stars  under  the  heading  "  Obs."  the  letters  are  given  which  were 
used  to  designate  the  stars  in  the  observations,  and  under  the  next  ASV.  their  numbers  in  the 
catalogues  accompanying  the  charts  of  the  Atlas.  The  "Series"  in  which  the  variable  is 
contained  is  mentioned  above  with  the  title.  When  the  variable  belongs  to  the  IY.  Series,  the 
column  is  left  blank  for  future  insertion.  BD.  means  the  Bonn  "  Durchmusterung"  number. 
The  Steps  were  not  taken  from  the  Atlas,  but  derived  in  the  usual  way  from  the  observations 
themselves,  except  in  a  few  cases  which  will  be  specially  mentioned.  As  to  the  last  column, 
headed  "  Magn."  the  following  principles  have  been  followed  according  to  the  Series  of  the 
Atlas  to  which  the  variable  belongs.  For  the  stars  of  Series  I,  II,  III  the  magnitudes  are  those 
computed  for  the  Atlas.  When  a  particular  comparison  star  is  not  found  in  the  Atlas,  because 
lying  outside  the  chart,  the  BD,  magnitude  is  given  in  parenthesis.  For  stars  of  Series  IV, 
which  is  not  yet  published,  the  BD.  magnitudes  are  given.  The  catalogues  of  Series  V  contain 
three  columns  of  photometric  magnitudes.  Here,  however,  instead  of  giving  the  mean  of  these 
it  was  thought  best  to  take  the  H.  P.  magnitudes  alone. 

The  table  of  comparison  stars  is  followed  by  a  few  explanatory  Notes. 

The  columns  of  the  Observations  require  but  a  few  remarks.  The  four  numbers  I-IV  under 
Sky  are  the  usual  notation  for  the  transparency  of  the  sky,  I  denoting  very  good,  and  IV  bad. 
Disturbing  moonlight  (not  the  age  of  the  moon)  is  denoted  in  three  intensities,  by  one,  two  or 
three  signs  ]). 

The  passage  from  the  decimal  method  to  that  by  steps-  is  pointed  out  in  the  column  Com- 
parisons. For  the  decimal  method,  moreover,  an  abbreviated  notation  has  been  used,  whose 
different  appearance  makes  the  change  of  method  obvious.  Thus  the  first  observation  of  U 
CepJiei  is  :  b  3  c,  which  is  abbreviated  from  :  b  3  U  7  c,  and  means  that  the  variable  U  is  0.3  of  the 
interval  c-b  fainter  than  b,  or  0.7  brighter  than  c.  The  rule  of  abbreviation  is,  that  the  second 
figure  (the  complement  of  the  first  to  10)  and  the  letter  of  the  variable,  are  always  omitted. 
Consequently  the  notations  :  d  0?i,  a  10  d  mean:  d  0  U  10  n,  a  10  U  0  d,  or  that  the  variable  is 
equal  to  d.  Evidently  the  decimal  method  coincides  with  that  by  steps,  whenever  the  observer 
estimates  10  steps  between  the  two  comparison  stars.  In  the  same  column  the  signs  !  and  ?  are 
not  later  insertions,  but  indicate  certainty  or  doubt  at  the  time  of  observation.  The  different 
seasons  of  observations  are  separated  by  horizontal  lines,  to  make  the  discontinuity  of  the  light 
vcurve  more  apparent  to  the  eye. 

The  headings  /,  //  and  Mean,  refer  to  the  two  formulas  given  above.  It  is  evident,  that 
only  the  geometrical  proportion  (formula  II)  can  be  applied  to  the  decimal  method.  Numbers 
in  parenthesis  mean  that  they  have  been  found  to  bear  internal  evidence  of  erroneous  or  poor 
observation.  They  have  generally  received  one-half  of  the  weight  of  the  others.  Attention 
must  be  called  to  the  use  of  the  signs  >  and  <  in  the  columns  headed  :  Comparisons  and  Mean. 
In  the  former  column  the  notation  T  <  c  for  example  means  that  the  variable  T  is  fainter  than 
the  comparison  star  c.  If  the  step  assigned  to  c  is  e.  g.  27.8,  this  observation  is  expressed  in 
the  other  column  thus  :  >  27.8,  meaning  that  the  number  of  steps  belonging  to  T  is  greater  than 
27.8. 

The  Remarks  refer  to  the  original  record,  whilst  critical  discussions  were  entered  later  as 
foot  notes.  That  the  remarks  "seeing  poor"  or  "difficult"  are  not  contradictory  to  the  desig- 
nation I  or  II  of  the  sky,  is  well-known  to  observers  ;  they  usually  refer  to  causes  not  apparent 
in  the  sky. 


IN  TROD  UCTION.  5 

The  Julian  Day  and  the  brightness  in  steps  from  the  preceding  column  will  generally  be 
sufficient  to  plot  the  light  curves  and  to  compute  the  phases  and  periods  of  the  variables,  except 
those  of  the  Algol  type.  For  these  the  hours  and  minutes  will  be  needed,  and  can  be  taken  from 
the  second  column. 

In  the  column  Remarks  the  word  "  Epli"  denotes  the  ephemeris  published  annually  in  the 
V.J.S.,  and  shows  that  the  observations  of  the  Algol  stars  were  generally  not  arranged  with 
the  purpose  of  obtaining  the  exact  times  of  the  minima. 

Finally  mention  should  be  made  of  the  fact,  that  the  copying  and  computing  of  these 
observations  has  been  done  by  six  or  seven  different  persons  at  various  times,  and  that,  for  this 
reason,  small  errors  may  have  escaped  notice.  Larger  errors  have  probably  been  detected,  as 
they  would  cause  a  break  in  the  sequence  of  the  numbers. 

WASHINGTON,  D.  C.,  December  8,  1901. 

J.  G.  HAGEN,  S.  J. 


I.   Observations  Made  by  J.  G.  Hagen,  S.  J.,  from   1884  to    1888. 


These  observations  were  made  in  Prairie-Du-Chien,  Wisconsin,  while  teaching  in  the  college 
there.  This  will  explain  why  the  time  of  observation  was  usually  confined  to  the  regular  hours 
between  8  and  10  p.  m.  The  instrument  was  a  3  inch  telescope  by  Merz,  of  good  definition,  and 
the  eyepiece  employed  had  a  power  of  25  diameters,  with  a  field  of  over  one  degree.  Many  of 
the  observations  were  independently  repeated  by  a  student,  George  Zwack,  some  3  or  4  minutes 
later.  These  estimates  are  distinguished  by  the  letter  (Z).  As  an  appendix  to  these  observa- 
tions are  added  those  of  Nova  Aurigae  made  later  in  1892,  at  the  Georgetown  College  Observatory. 


320  U  Cephei  SERIES  IV. 

(1900)   Oh  53m  23s      (+5?  09);     +81°  20'.2     (  +  0'.33) 

Period  :  2d   llh  49m  ±  ;     Variation :  7*1— 9*2. 

Comparison  Stars  : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

b 

4-81°]  3 

0.0 

6.5  BD. 

c 

+  81  18 

6.5 

7.6     " 

e 

+81  30 

10.7 

8.3     " 

a 

+  81  27 

13.2 

8.6     " 

d 

+  81  22 

17.4 

9.2     " 

n 

+81  26 

23.8 

9.5     " 

Notes : 

This  Algol  star  was  not  observed  systematically  with  the  view  of  obtaining  complete  deter- 
minations of  the  Minima,  but  rather  for  practice,  to  get  a  general  knowledge  of  its  variations. 
The  observations  may  be  utilized  for  the  study  of  the  light  curve,  now  that  the  period  is  Well 
determined, 


320 


U  CepJiei 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

DECIMAL  METHOD: 


84  July      1 

h        m 

15  25 

III  D 

b  3  c 

2.0 

2.7 

09  359 

15  30 

b  5  c  (Z) 

3.3 

10 

16     4        III  DD 

a2  d 

14.0 

14.5 

368 

16     9 

a  4  d  (Z) 

14.9 

Aug.    22 

15  46 

I 

b  3  c 

2.0 

2.3 

411 

15  51          I 

b  4  c  (Z) 

2.5 

Sept.    10 

15  25 

II 

b  6  c 

3.9 

3.9 

430 

20 

15  10 

T 

b  9  c 

5.9 

4.6 

440 

b  3  e 

3.2 

Oct.     10 

15  17 

T 

b  7c 

4.6 

4.6 

460 

16 

15  22 

III 

b7c 

4.6 

4.6 

466 

Nov.      7 

15  32 

I 

b  7  c 

4.6 

4.5 

488 

b4  e 

4.3 

14 

14  52 

I 

b  7  e 

7.5 

7.3 

495 

c  2e 

7.3 

c  1  a 

7.2 

Dec.       9 

15  10 

III 

c  9  d 

16.3 

16.0 

520 

e  8  d 

16.1 

a  6  d 

15.7 

85  Jan.       6 

15     0 

III 

b  7  c 

4.6 

5.5 

548 

b  6  e 

6.4 

13 

14  45 

I 

e  7  d 

15.4 

15.4 

555 

a5  d! 

15.3 

March  7 

15     7 

I 

b7  c 

4.6 

4.6 

608 

May     13 

16  25 

III 

b  3e 

3.2 

2.9 

675 

b4  c 

2.5 

14 

15  25 

I 

b  6c 

3.9 

3.9 

.      676 

15 

15  30 

I-II 

e  3  d 

12.7 

13.2 

677 

aid,  U<e! 

13.6 

:,     19 

15  22 

III  D 

b  6  e 

6.4 

5.5 

681 

b  7  c 

4.6 

20 

15  28 

II  D 

e8d 

16.1 

15.9 

682 

a  6  d? 

15.7 

« 

15  54 

U 

a  9  d 

17.0 

17.0 

« 

u 

15     7 

U 

a  10  d 

17.4 

17.4 

it 

U 

16  19 

« 

d  1  n,U<d! 

18.0 

18.0 

t  1 

« 

16  23 

U 

d2  n 

18.7 

18.7 

(  i 

« 

16  30 

U 

a  10  d 

17.4 

17.4 

U 

« 

16  39 

(( 

a  10  d 

17.4 

17.4 

t  i 

U 

16  44 

(  C 

a  9d 

17.0 

17.0 

c< 

U 

16  49 

(  ( 

a  8  d 

16.6 

16.6 

M 

C( 

16  54 

it 

a8d! 

16.6 

16.  (5 

<  t 

t( 

17  18 

(t 

a  10  d 

17.4 

17.4 

« 

21 

14  40 

II  D 

b5  a 

6.6 

5.6 

683 

b  7c 

4.6 

22 

14  50 

DD 

b  7  c 

4.6 

4.6 

684 

23 

15     5 

DD 

b7c 

4.6 

4.6 

685 

25 

15  50 

DD 

din 

18.0 

18.0 

687 

30 

16  25 

I 

din 

18.0 

18.0 

692 

Eph.  3h  after  Mm. 


Eph.  ih  after  Min. 


Eph.  lh  after  Min. 


Eph.  IP  before  Min. 


Eph.  Helioc.  Min.  51m. 


From  now  until  17*  18m 
never  brighter  than  d. 
Eye  tired. 


Eph.  ih  before  Min. 
Eph.  Helioc.  Min.  10r 


8 


320 


U  Gepliei 


Series  IV. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

85  June      4 

15h  20m 

I 

d  0  n 

17.4 

17.4 

09  697 

Eph.  Helioc.  Min.  50m. 

a  10  d 

17.4 

« 

16  56 

a 

d  1  n 

18.0 

18.0 

M 

8 

16     0 

I 

b  7  c 

4.6 

4.6 

701 

9 

15  35 

I 

e  9  d  ! 

16.7 

16.7 

702 

Eph.  Helioc.  Min.  29™. 

t< 

16  52 

c  i 

e8d  ! 

16.1 

16.1 

n 

15 

15  15 

III 

b  8  c 

5.2 

5.2 

708 

17 

15  25 

I 

b  8  c 

5.2 

5.2 

710 

18 

15  10 

b8  c 

5.2 

5.2 

7J1 

21 

15  30 

b  8  c 

5.2 

5.2 

714 

Nov.    23 

15  36 

II  3)DD 

a  9  d 

17.0 

17.0 

869 

Full  moon. 

tt 

15  46 

<  i 

a  9  d 

17.0 

17.0 

Ct 

tt 

16  11 

II 

din! 

18.0 

18.0 

a 

Eph.  Helioc.  Min.  16hlm 

86  Jan.       5 

14  54 

I 

b  7  c 

4.6 

4.6 

09  912 

Feb.       3 

15  46 

I 

b  9  c 

5.9 

5.9 

941 

6 

14  57 

II 

b7c 

4.6 

4.6 

944 

8 

15  21 

I 

b7  c 

4.6 

4.6 

946 

Mar.      5 

15  44 

I 

b7c 

4.6 

4.6 

971 

22 

13  50 

I 

b  8  c 

5.2 

5.3 

988 

b  5  e 

5.4 

25 

15  43 

I 

b  8c 

5.2 

5.2 

991 

April     4 

15  43 

I 

U  =  c 

6.5 

6.5 

10  001 

19 

15  50 

II])]) 

c  9  e 

10.3 

10.3 

016 

June    23 

15     3 

II 

a4d 

14.9 

14.8 

081 

Eph.  Hh  after  Min. 

e  6  d 

14.7 

« 

16  17 

tt 

c  5  e 

8.6 

8.6 

it 

c  3  a 

8.5 

« 

16  45 

ft 

c  3  e 

7.8 

7.8 

tt 

c  2  a 

7.8 

28 

15  42 

I 

c  8  e 

9.9 

9.9 

086 

METHOD  BY  STEPS: 


87  April  18 

16     0 

II 

a  3  U  2d 

15.8 

15.7 

15.8 

10  380 

n 

16  10 

II 

a  3  U  2d 

15.8 

15.7 

15.8 

tt 

May     18 

15  32 

I 

a3  U  2  d 

15.8 

15.7 

16.7 

410 

a  3  U  3  n 

(18.5) 

(18.5) 

tt 

15  55 

a 

a  3  U  2  d 

15.8 

15.7 

16.7 

tt 

a  3  U  3  n 

(18.5) 

(18.5) 

U 

16  55 

a 

e2  U  0  d 

15.1 

17.4 

16.3 

tt 

It 

17     2 

1  1 

eO.5  U2a 

11.2 

11.2 

11.2 

tt 

June      2 

13  46 

II 

a  3  U  2d 

15.8 

15.7 

15.8 

425 

« 

15     6 

II 

a3  U  2  d 

15.8 

15.7 

15.8 

i  t 

U 

15  26 

II 

a2  U  3d 

14.8 

14.9 

14.9 

1  1 

It 

15  37 

II 

a2U  3  d 

14.8 

14.9 

14.9 

1  1 

14 

16     6 

I 

U3c 

3.5 

3.5 

437 

Oct.     12 

15  14 

e3  U  3d 

14.1 

14.0 

14.1 

557 

a  1  U 

14.2 

n 

15  41 

e  5  U  0  d 

16.6 

17.4 

16.7 

a 

a  3  U 

16.2 

Eph.  lh  before  Min. 
Eph.  |h  after  Min. 


Eph.  lh  after  Min. 


320 


V  CepJiei 


Series  IV. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

87  Oct.      12 

h       m 

15  52 

d  1  U  5  n 

18.6 

18.5 

18.3 

10  557 

a  4  U  5  n 

18.0 

17.9 

« 

16     4 

d  2  U  5  n 

19.1 

19.2 

19.2 

it. 

(i 

16  13 

d  2  U  5  n 

19.1 

19.2 

18.8 

« 

Eph.  ih  before  Min. 

a  5  U  5  n 

18.5 

18.5 

,4 

Nov.    11 

15     4 

I 

d  2  U  4  n 

19.6 

19.4 

19.5 

587 

l<      ih  after  Min. 

(< 

15  18 

I 

d2  U  5  n 

19.1 

19.2 

18.8 

c« 

a  5  U  5  n 

18.5 

18.5 

« 

15  34 

u 

a  4  U  0.5  d 

17.1 

17.0 

17.1 

a 

« 

16     8 

« 

a  3  U  2  d 

15.8 

15.7 

15.8 

« 

782 


R  Arietis 


Series    II. 


(1900)     2     I0     25     (+3.40);     +24°     35/5     (  +  0/28) 

Period:  186.55;  Variation:  8i—12i 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

1 

+  24°329 

0.0 

[6.0]    BD. 

k 

2 

+  23  303 

7.2 

[6.5]    BD. 

g 

4 

+  23  306 

15.0 

8.9 

b 

7 

+24  327 

18.0 

9.4 

f 

5 

+  24  334 

20.8 

9.2 

e 

6 

+  24  333 

22.2 

9.4 

c 

9 

+  24  331 

25.8 

9.6 

h 

14 



30.1 

10.0 

d 

13 

31.5 

10.0 

Notes : 

The  last  column  indicates  that  comparison  star  &  was  estimated  brighter  with  the  3-inch 
telescope  than  with  larger  instruments  in  later  years.  The  sequence  in  the  Atlas  is  as  follows  : 
g,  f,  e,  b,  c.  Whatever  the  cause  of  the  discrepancy  may  be,  it  was  thought  more  correct  to 
reduce  the  observations  by  the  above  scale,  which  is  derived  from  the  observations  themselves. 

The  comparison  star  g  was  in  later  years  suspected  of  slight  variations. 


10 


782 


Arietis 


Series  II. 


18(50  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

DECIMAL    METHOD: 


83  Feb.   5 

b 

16.2 

I 

a4  b 

7.2 

7.2 

08  847 

7 

15.9 

I 

a4  b 

7.2 

7.2 

849 

9 

14.8 

I 

a  3  b 

5.4 

6.6 

851 

a  3  c 

7.7 

11 

14.9 

I  D 

a  3  b 

5.4 

6.6 

853 

a  3  c 

7.7 

26 

14.6 

I 

a4  b 

7.2 

(10.0) 

868 

a  6  c 

(15.5) 

27 

14.8 

I 

a  4  b 

7.2 

(8.2) 

869 

' 

a  4  c 

(10.3) 

28 

14.7 

IT 

a  3  b 

5.4 

6.6 

870 

a  3  c 

7.7 

March  1 

14.6 

II 

a6  b 

10.8 

(15.8) 

871 

a  10  c 

(25.8) 

4 

15.3 

II 

a  8  b 

14.4 

14.4 

874 

7 

15.2 

III 

a  7b 

12.6 

12.6 

877 

8 

14.6 

II 

a  8  b  • 

14.4 

14.4 

878 

12 

15.3 

I  D 

a  8b 

14.4 

14.4 

882 

13 

14.9 

I  D 

a  8  b 

14.4 

14.4 

883 

15 

14.4 

I 

a  12  b 

21.6 

21.6 

885 

i.e.R<b 

31 

14.5 

III 

R  &  c  invis. 

901 

Sept.  26 

16.0 

I 

R  invis. 

- 

>30 

09  080 

30 

16.0 

I 

(i 

u 

084 

Oct.   6    14.8 

I 

« 

u 

090 

Nov.   1 

15.5 

I 

1  1 

u 

116 

Dec.  28 

'15.8 

II 

b3d 

22.1 

22.1 

173 

b  3  d  (Z) 

22.1 

84  Jan.   3 

14.7     III 

b  7  c 

23.5 

22.7 

09  179 

b5c?(Z) 

21.9 

5 

15.1     I 

a  9  c 

23.2 

23.2 

181 

a  9  c  (Z) 

23.2 

15 

15.1 

I 

a  7  c 

18.2 

19.9 

191 

R  =  f 

20.8 

a  8  c  (Z) 

20.6 

17 

14.7 

I 

a  7  c 

18.2 

20.4 

193 

f  3  c 

22.3 

a  7  c  (Z) 

18.2 

e  2c  " 

22.9 

19 

15.0 

II 

a  8  c 

20.6 

21.8 

195 

f  3  c 

22.3 

a  8  c  (Z) 

20.6 

e  4  c  (Z) 

23.6 

20 

15.0 

II 

a  8  c 

20.6 

20.6 

196 

f  0  c 

20.8 

a  7  c  (Z) 

18.2 

e  2  c  (Z) 

22.9 

near  horizon 


R  barely  visible, 
b  and  c  well  seen 

b  barely  visible 


782 


Arietis 


Series  II. 


11 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

84  Jan.     21 

h 
14.6 

II 

a  8  c 

20.6 

20.8 

09  197 

f  3  c 

22.3 

a  7  c  (Z) 

18.2 

e  0  c  " 

22.2 

23 

15.0 

I 

a  8  c 

20.8 

19.9 

199 

f  1  c 

21.3 

a6c,R>e(Z) 

(15.5) 

24 

14.6 

II 

a  8  c 

20.8 

21.3 

200 

f  2  c 

21.8 

.  / 

a  8  c  (Z) 

20.8 

• 

f  2c    " 

21.8 

,    30 

15.0 

II 

a  8  c 

20.8 

20.7 

206 

f  2  c 

21.8 

a  6  c  (Z) 

(15.5) 

f  2  c    " 

21.8 

31 

14.6 

III 

a  8  c 

20.8 

17.7 

207 

g2c,R>f 

17.2 

a  6  c  (Z) 

15.5 

g2c,R>f(Z) 

17.2 

Feb.       4 

14.9 

III 

a  7  c 

18.2 

21.4 

221 

' 

f  3  c 

22.3 

a  9  c(Z) 

23.2 

f  2  c    " 

21.8 

19 

15.1 

I 

a  9  c 

23.2 

23.3 

226 

f  6  c 

23.8 

a  9  c  (Z) 

23.2 

f  4  c    " 

22.8 

Sept.    17 

16.0 

c  10  d 

31.5 

31.5 

09  437 

24 

16.2 

I 

c7h,  R>  d 

28.8 

(28.8) 

444 

*) 

Oct.     12 

15.0 

I 

R  invis. 

>30 

462 

17 

15.0 

I 

ti 

u 

467 

Nov.      8 

14.8 

I 

d 

l< 

489 

18 

15.9 

I 

« 

« 

499 

Dec.     22 

14.8 

II 

u 

« 

533 

85  Jan.       9 

15.7 

I 

c4h 

27.5 

27.5 

551 

c  3  d 

27.5 

Mar.      7 

14.7 

I 

c  2h 

26.7 

26.7 

608 

bl  h 

(19.2) 

*  *\ 

Sept      5 

15.2 

I 

g8b 

17.4 

20.0 

790 

g7c 

22.6 

13 

15.3 

I 

R  =c 

25.8 

25.8 

798 

Oct.       1 

15.5 

II 

B  <  h 

>30 

816 

13 

I 

R  <h 

« 

828 

*)  The  two  observations  are  contradictory. 
*  *)  b  1  k  can  have  little  weight,  since  the  interval  k-b  =  =  12.1  steps  is  too  large. 


782 


R  Ariel  is 


Series  II. 


18004- 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

86  Jan.       (5 

h 

15.3 

III 

f  4  e 

21.4 

22.0 

09  913 

f  3  e 

22.5 

30 

15.7 

II-III 

a  6c 

(15.5) 

13.1 

937 

a7g 

10.5 

a7f 

14.6 

Feb.       2 

15.6 

III 

a  7  c 

(18.1) 

14.0 

940 

a8g 

12.0 

7 

15.6 

I 

k6g 

11.9 

12.0 

945 

a8g 

12.0 

22 

15.7 

I 

k6g 

11.9 

12.0 

960 

a8g 

12.0 

25 

15.7 

I 

k  8  g 

13.4 

14.8 

963 

k  7  e 

(17.7) 

Mar.      2 

15.7 

I 

k8g 

13.4 

13.4 

968 

5 

15.1 

I 

k9g 

14.2 

15.9 

971 

• 

k  8  e 

(19.2) 

25 

14.2 

I 

b  4  d 

i  (23.4) 

27.3 

991 

c6  d 

29.2 

METHOD  BY  STEPS: 


87  Jan.     14 

15.4 

III 

g2e 

16.4 

16.3 

10  286 

g4l 

17.3 

g  3  R8e 

16.1 

16.7 

g3  R  6f 

16.4 

16.9 

23 

14.9 

I 

R2g 

13.0 

13.9 

295 

R6f 

14.8 

Feb.     12 

14.5 

I 

R3g 

12.0 

13.1 

315 

R7  e 

(15.2) 

24 

14.6 

I 

a  12  R  3  g 

12.0 

12.0 

(14.0) 

327 

R  7  e 

(15.2) 

R  9  c 

(16.8) 

27 

15.3 

III 

a  12  R  2  g 

12.5 

12.9 

13.8 

330 

R6  f 

14.8 

R  9c 

14.8 

Mar.    13 

14.6 

III 

R2g 

13.0 

13.6 

344 

R8  e 

14.2 

17 

14.3 

I 

g2  R  4f 

16.9 

16.9 

17.2 

348 

R8c  ! 

17.8 

Sept.      7 

15.3 

I 

R2g 

13.0 

16.0 

10  522 

R3  b 

15.0 

R3f 

17.8 

R4e 

18.2 

16 

15.4 

II 

g  1  R  3  f 

16.9 

16.5 

16.7 

531 

23 

15.7 

II  D 

g2  R  3  f 

17.4 

17.3 

17.4 

538 

Oct.     12 

15.4 

c  2  R  3  h 

27.5 

27.5 

27.5 

557 

18 

15.0 

II 

c  3  R2h 

28.5 

28.4 

28.5 

563 

Nov.    11 

15.9 

I 

h  2  R 

32.1 

32.1 

587 

Decimal  method 


Near  horizon 


*  *  * 


)  The  journal  has  R  1  g  3  f ,  which  would  at  that  time  have  been  to  the  observer  a  very 
unusual  way  of  recording. 


782 


Arietis 


Series  II. 


13 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

88  Jan.       8 

h 

16.4 

I 

c  1  R  3  h  ! 

27.0 

26.9 

27.0 

10  645 

11 

14.8 

I 

f  3  R  2  c  ! 

23.8 

23.8 

23.8 

648 

17 
Feb.       7 

14.7 
15.1 

I    D 
I 

f  2  R  3  c 
a7  R  3g 
a  7  R  5  f 

22.8 
9.5 
11.4 

22.8 
10.5- 
12.1 

22.8 
10.8 

654 
675 

14 

14.1 

I 

a7  R4g 
k  3  R 

9.0 
10.2 

9.5 

9.6 

682 

Mar.      6 
13 

14.8 
14.7 

I 
I 

k4R3g 
k  5  R  3g 

11.6 
12.1 

11.7 
12.1 

11.7 
12.1 

703 
710 

Near  horizon 

<  t         u 

Aug.  i  12 
Sept.      6 
Oct.       7 

16.1 
15.3 

16.8 

I 
I 
I 

k  5  R  3  g 
R4g 
b2  R  3  e 

12.1 
11.0 

19.6 

12.1 
19.9 

12.1 
11.0 
20.1 

862 
887 
918 

t<            u 

U                  t  ( 

ROf 

20.8 

814 


S     Persei 


SERIES  III. 


h        m    s  (h) 

(1900)     2  15  41     (  +  4.27);     +58°  7'. 8  (  +  0/28) 

M  M 

Long  period;  Variation  :  8?  —  12. 
Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

g 

1 

+  58°471 

0.0 

7.8 

f 

4 

+  58  467 

3.3 

8.2 

e 

5 

+  58  452 

4.3 

8.3 

k 

7 

+  57  549 

5.3 

8.5 

d 

9 

+  58  457 

8.7 

8.8 

b 

18 

+  57  557  . 

14.5 

9.5 

c 

36 

19.1 

10.9 

a 

38 

23.1 

11.0 

Notes : 

The  records  "invisible"  are  very  important  in  the  case  of  this  star,  as  without  them  it 
would  have  been  very  difficult  to  prove  that  the  period  in  Chandler's  Cat.  I.  was  too  short. 
These  observations  were  continued  in  Washington  for  a  short  while.     See  below  No.  III. 


814 


Persei 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


Aug.        2 

h 

16.5 

I 

S=b 

4 

16.2 

II 

S=  b   . 

5 

15.5 

? 

S  <  b 

9 

16.5 

ii 

S<  b 

22 

14.8 

i 

b7c 

23 

15.3 

ii 

bSc 

24 

14.9 

ii 

b  Sc 

Sept.        2 

14.8 

i 

b7c 

3 

15.0 

i 

b  7c 

4 

15.2 

i 

b6c 

5 

15.8 

i 

b7c 

21 

14.5 

in 

bSc 

25 

16.2 

ii 

b9c 

26 

14.1 

i 

b9c 

30 

14.6 

i 

S  <  c 

Oct.         3 

in 

S  =  c 

6 

14.3 

i 

b  7  c! 

Nov.        1 

i 

S  <  a 

Jan.       17 

i 

S  <c 

19 

ii 

S  <c 

20 

ii 

S  <c 

31 

in 

S<c 

April       2 

D 

S  invis. 

Aug.      25 

15.3 

I 

b7  a 

15.4 

I 

b  7  a  (Z) 

Sept.      11 

15.8 

II 

b4c 

24 

15.2 

I 

d7b 

Oct.        12 

15.1 

I 

d7c 

d4b 

d  2a 

17 

15.3 

I 

d  Ib 

Nov.        8 

15.9 

II 

e2d 

18 

15.5 

I 

f8e 

f5d 

Dec,         9 

15.7 

ill 

f9e 

f3d 

Jan.         6 

15.2 

ill 

gSf 

g6e 

13 

15.0 

I 

g3f 

g2e 

Mar.        7 

15.5 

I 

g3f 

g2e 

April     10 

14.7 

II 

g3f 

g2e 

22 

16.1 

II 

g3f 

g2e 

Aug.      10 

16.2 

I 

d  1  b 

13 

16.5 

I 

d3b 

14 

15.4 

I 

d  6b 

14.5 

09  025 

14.5 

027 

>14.5 

028 

>14.5 

032 

17.7 

045 

18.2 

046 

18.2 

047 

17.7 

056 

17.7 

057 

17.3 

058 

17.7 

059 

18.2 

075 

18.6 

079 

18.6 

080 

>19.1 

084 

19.1 

087 

17.7 

090 

>23 

116 

>20 

193 

« 

195 

a 

196 

a 

207 

>24 

269 

20.5 

20.5 

414 

20.5 

16.3 

16.3 

431 

12.8 

12.8 

444 

10.8 

11.1 

462 

11.0 

11.6 

9.3 

9.3 

467 

5.2 

5.2 

489 

4.1 

3.9 

499 

3.6 

4.2 

4.6 

520 

4.9 

2.6 

2.6 

548 

2.6 

1.0 

1.0 

555 

0.9 

1.0 

1.0 

608 

0.9 

1.0 

1.0 

642 

0.9 

1.0 

1.0 

654 

0.9 

9.3 

9.3 

764 

10.4 

10.4 

767 

12.2 

12.2 

768 

Cloudy 


a  invisible 


Sred 


a  visible. 


814 


S  Persei 


Series  III. 


15 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  Aug.      15 

b 

15.3 

III 

d  7  b 

12.8 

12.8 

09  769 

18 

15.2 

ID 

d  8b? 

13.3 

16.1 

772 

d  7  a 

18.8 

28 

14.7 

ID 

c  0  a 

19.1 

(19.1) 

782 

Approximate 

.  Sept.       13 

15.5 

I 

d  8b 

13.3 

15.1 

798 

d7c 

16.0 

d  5  a 

15.9 

Oct.          1 

15.1 

III 

b4e 

16.3 

16.7 

816 

b  3a 

17.1 

8 

15.8 

I 

b  1  a 

15.4 

15.4 

823 

Eye  tired 

9 

15.2 

I 

b4  a 

17.  & 

17.6 

824 

b6c!  ! 

17.3 

10 

15.3 

III 

b4a 

17.9 

17.8 

,  825 

b7c 

17.7 

11 

15.2 

III 

b  5  a 

18.8 

18.3 

826 

b  7  c 

17.7 

13 

15.0 

I 

b4a 

17.9 

17.8 

828 

b  7  c 

17.7 

15 

15.9 

II  D 

b6a 

19.7 

18.9 

830 

b  8  c 

18.2 

16 

15.1 

DD 

b  5  a 

18.8 

18.3 

831 

b7c! 

17.7 

Nov.        4 

15.6 

II 

b  10  c 

19.1 

20.3 

850 

b  8  a 

21.4 

9 

15.4 

I 

b  9c 

18.6 

19.6 

855 

b7a 

20.5 

12 

15.1 

II 

c5a,S<c! 

21.1 

21.1 

858 

86  Jan.       30 

16.1 

II-III 

S  invis. 

>24 

937 

a  invis.  b  and  c  well  seen 

Feb.       23 

15.1 

I 

(.            U 

a 

961 

a  and  c  well  seen 

Mar.       25 

15.0 

I 

u        ^^ 

a 

991 

April       2 

15.1 

I 

a        u 

K 

09  999 

a  barely  vis.,  c  well  seen 

July        5 

11            U 

d 

10  093 

METHOD  BY  STEPS: 


Jan.        14 

15.8 

II-III 

d4S4b 

11.6 

11.6 

11.6 

286 

e7S7c 

11.7 

11.6 

295 

23 

15.2 

I 

e4S6  b 

8.4 

8.2 

8.6 

295 

SlOc 

9.1 

Feb.       12 

14.7 

I 

d  1  S3  b 

10.6 

10.2 

10.4 

315 

e6S 

10.3 

24 

is;o 

I 

e3S2d 

7.0 

6.9 

7.9 

327 

e3S4b 

8.9 

8.7 

Feb.       27 

15.6 

III]) 

e3S4b 

8.9 

8.7 

8.8 

330 

8-d 

8.7 

Mar.       13 

14.8 

III 

e  2S4d 

5.5 

5.8 

5.9 

344 

klS 

6.3 

17 

14.6 

I 

e  1.5  S  8  b 

6.2 

5.9 

6.3 

348 

klS2d 

6.5 

6.4 

The  Journal  has  d  6  S  with  a  correction  into  e  6  S;  which  must  have  been  made  soon  after. 


16 


814 


S  Persei 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

•2400000 

Remarks 

87  Mar.      24 

h 

15.6 

I 

e2S 

6.3 

6.0 

10  355 

k  1  S3d 

6.0 

5.8 

Apr.      18 

15.7 

II 

g2Sl  f 

2.2 

2.2 

2.2 

380 

25 

16.0 

I 

g3S3k 

2.7 

2.2 

2.7 

387 

Sof 

3.3 

May       15 

15.7 

I 

foS2e 

2.8 

3.3 

3.1 

407 

June      17 

17.0 

I 

g!S2f 

1.2 

1.1 

1.2 

440 

S3e 

1.3 

21 

16.1 

glS2f 

1.2 

1.1 

1.4 

444 

gl  S2e 

1.7 

1.4 

July        9 

II 

g  1  S  2  f 

1.2 

1.1 

1.2 

462 

S3e 

1.3 

15 

15.4 

I 

g2S2f 

1.7 

1.7 

1.5 

468 

S3e 

1.3 

22 

16.2 

I 

g2S2f 

1.7 

1.7 

1.5 

475 

S3e 

1.3 

Aug.        6 

15.6 

II 

glS2f 

1.2 

1.1 

1.2 

490 

S3e 

1.3 

Sep.         7 

15.1 

I 

g  1  S  2  f 

1.2 

1.1 

1.2 

522 

I 

S3e 

1.3 

16 

15.2 

II 

foS2e 

2.8 

3.3 

3.1 

531 

23 

15.6 

II]) 

g2S  1  f 

2.2 

2.2 

2.5 

538 

S2e 

2.3 

S2k 

3.3 

Oct.       12 

15.8 

eoS3  d 

5.0 

4.3 

4.7 

557 

18 

15.2 

II 

e2S3d 

6.0 

6.1 

5.8 

563 

Sok 

5.3 

Nov.      11 

16.1 

I 

k2S2d 

7.0 

7.0 

7.3 

587 

e3.5S 

7.8 

17 

15.6 

I 

k  3S4b 

9.4 

9.2 

9.3 

593 

Dec.         7 

16.1 

I 

d  3S4b 

11.1 

11.0 

11.1 

613 

38  Jan.         8 

16.5 

I 

b3S2c 

17.3 

17.3 

17.3 

645 

11 

14.9 

I 

b  2S3c 

16.3 

16.3 

16.3 

648 

17 

14.8 

I]) 

b3S  2c 

17.3 

17.3 

17.3 

654 

Feb.         7 

15.2 

cl  S3a 

20.1 

20.1 

20.1 

675 

Aug.      12 

16.0 

I 

S  just  vis. 

>24 

862 

Oct.         7 

16.7 

I 

S  invis. 

u 

918 

976  T  Arietis  SERIES  IV. 

(1900)   2"42ra  45s    (-t-3.s34);     +17°  5'.5     (+0'.25) 

Period:  313d  (periodic  inequal.);  Variation:  8JM— 9|M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

h 

-f!6°342 

0.0 

7.8  BD. 

g 

+16  346 

6.7 

8.7    " 

e 

+  16  345 

8.7 

8.6    " 

c 

+  16  348 

12.7 

8.8     " 

d 

+  17  440 

14.7 

8.9     " 

a 

+16  350 

18.9 

9.5    " 

b 

+  16  347 

22.2 

9.5    " 

Notes  : 

The  comparison  star '  g  was  suspected  of  variability,  as  it  appeared  at  times  decidedly  fainter  than  e.     The 
changes  seem  to  depend  on  the  season  of  the  year,  and  consequently  on  the  position  of  the  observer. 


(17) 


18 


976 


T  Arietis 


Series  YT. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

j 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


83  Sept.      26 

16.6 

1 

e3d 

30 

15.8 

I 

e4d 

Oct.          6 

15.4 

I 

e8d 

Nov.         1 

15.4 

I 

e8d 

3 

15.0 

I 

d4a! 

6 

15.1 

nj 

e8d  ! 

7 

14.8 

i  ^ 

d  1  a 

18 

14.9 

ii 

d  2  a 

dl.5a(Z) 

26 

15.5 

i 

d  4  a 

d  6  a  (Z) 

27 

15.4 

in 

d  7a 

d  6  a  (Z) 

29 

14.5 

ii  ., 

d  7a 

d  5  a  (Z) 

Dec.       21 

14.8 

in 

d4a 

d  6  a  (Z) 

25 

16.1 

in 

d  4  a 

d  4  a  (Z) 

28 

14.8 

ii 

d  4  a 

d  5  a  (Z) 

84  Jan.         3 

14.9 

in 

d  1  a 

d  0  a  (Z) 

5 

15.0 

1  3) 

e8d 

e  6  d  (Z) 

15 

14.9 

i 

e  5  d 

17 

14.5 

i 

e4d 

e  6  d  (Z) 

19 

14.2 

ii 

e8d 

e  5  d  (Z) 

20 

15.1 

ii 

e3d 

e  4  d  (Z) 

21 

14.5 

ii 

e7d 

e  4  d  (Z) 

23 

15.3 

i 

e5d 

e  4  d  (Z) 

24 

14.4 

ii 

e3d 

e  5  d  (Z) 

30 

15.1 

ii 

e7.5d 

31 

14.4 

in 

e8d 

e  4  d  (Z) 

Feb.       14 

14.7 

in 

eSd  ! 

e  5  d  (Z) 

19 

14.9 

i 

elOd 

. 

e  8  d  (Z) 

Sept.      17 

16.3 

ii-in 

e9c 

e  8  d 

e  5  a 

24 

16.4 

i 

e8  d 

e6a 

10.5 

10.5 

09  080  : 

11.1 

11.1 

084 

13.5 

13.5 

090 

13.5 

13.5 

116 

16.4 

16.4 

118 

13.5 

13.5 

121 

15.1 

15.1 

122 

15.5 

15.4 

133 

15.3 

16.4 

16.8 

141 

17.2 

17.6 

17.4 

142 

17.2 

17.6 

17.3 

144 

16.9 

16.4 

16.8 

166 

17.2 

16.4 

16.4 

170 

16.4 

16.4 

16.5 

173 

16.9 

15.1 

14.9 

179 

14.7 

13.5 

12.9 

181 

12.3 

11.7 

191 

11.1 

11.7 

193 

12.3 

13.5 

12.6 

195 

11.7 

10.5 

10.8 

196 

11.1 

12.9 

12.0 

197  . 

11.1 

11.7 

11.4 

199 

11.1 

10.5 

11.1 

200 

11.7 

13.2 

13.2 

206 

13.5 

12.3 

207 

11.1 

13.5 

12.6 

221 

11.7 

14.7 

14.1 

226 

13.5 

12.3 

13.2 

437 

13.5 

13.8 

13.5 

14.2 

444 

14.8 

976 


T  Arietis 


Series  IV. 


19 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

11 

Mean 

2400000+ 

Remarks 

84  Oct.        12 

h 
15.5 

I 

e  10  c 

12.7 

12.1 

09  462 

e5  d 

11.7 

e  3  a 

11.7 

17 

15.1 

I 

e  10  c 

12.7 

11.6 

467 

e3  d 

10.5 

Nov.        8           14.9 

II 

c4  d 

13.5 

14.0 

489 

c3a 

14.5 

18 

15.0 

I 

d4a 

16.4 

16.4 

499 

c  6  a 

16.4 

20 

15.7 

I 

c9  d 

14.5 

14.8 

501 

c  4  a 

15.2 

Dec.    ,    22 

14.9 

II 

c  7  a 

17.0  ' 

17.5 

533 

e  9  a 

17.9 

- 

85  Jan.         9 

15.8 

I 

d  6  a 

17.2 

17.5 

551 

d4b 

17.7 

Oct.         1 

15.6 

II 

d3a 

16.0 

16.0 

816 

8 

15.6 

I 

e9d  ? 

14.1 

(14.1) 

823 

9 

15.8 

I 

e9d  ! 

14.1 

14.1 

824 

13 

15.7 

I 

e9  d 

14.1 

14.5 

828 

e  6  a 

14.8 

15 

15.4 

D 

d  3a! 

16.0 

16.0 

830 

Difficult 

29 

15.4 

d  3  a 

16.0 

15.9 

844 

*) 

e  7  a 

15.8 

Nov.        4 

15.8 

II 

d4  a 

16.4 

16.1 

850 

c  5  a 

15.8 

9 

15.3 

I 

c9d  ! 

14.5 

15.5 

855 

, 

c  6  a? 

16.4 

12 

15.2 

II 

d  4a? 

16.4 

(16.1) 

858 

e5a? 

15.8 

Dec.         2 

15.5 

I 

d  3a 

16.0 

15.6 

878 

c  4a 

15.2 

6 

15.1 

I 

d  4  a 

16.4 

16.2 

882 

d  2b 

16.2 

c  5  a 

16.1 

11 

15.7 

I 

d  3  a 

16.0 

16.0 

887 

86  Jan.         5 

15.3 

I 

e  9c 

12.3 

13.0 

912 

e7  d 

12.9 

x 

e  5  a 

13.8 

11 

15.4 

I 

eld 

12.9 

13.4 

918 

c  2  a 

13.9 

Jan.       30 

15.8 

II-IH 

gOe 

6.7 

7.4 

937 

g2d 

8.3 

glc 

7.3 

Feb.         1 

15.4 

I 

h9g 

6.0 

6.0 

939 

2 

15.3 

I 

h9g 

6.0 

7.3 

940 

h  8e 

7.0 

h7c 

8.9 

*)  The  Journal  has  another  estimate:  d  7  c,  for  which  no  explanation  can  be  found,  as  it  is  contradictory  to  the 
scale  and  to  the  other  observations. 


976 


T  Arielis 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

1 

II 

Mean 

2400000+ 

Remarks 

86  Feb.         3 

h 

15.0 

I 

h9g 

6.0 

6.5 

09  941     T  >  g  ! 

hSe 

7.0 

6 

15.2 

h9g 

6.0 

7.3 

D44 

h  8e 

7.0 

h  7c 

8.9 

7 

14.9 

1 

h8g 

5.4 

6.4 

945 

h  7  e 

6.1 

h6c! 

7.6 

8 

14.9 

II-III 

h8g 

5.4 

5.4 

946 

15 

15.0 

DD 

h6g 

4.0 

4.0 

953 

T  very  red 

21 

15.0 

ill 

h7g? 

4.5 

4.5 

959 

Fog   ' 

22 

15.2 

I 

h6g 

4.0 

4.0 

960 

23 

14.6 

I 

h6g 

4.0 

(i 

961 

25 

15.2 

I 

h6g 

4.0 

a 

963 

Mar.         2 

15.5 

I 

h6g 

4.0 

u 

968 

• 

5 

14.8 

I 

h6g 

4.0 

H 

971 

25 

14.4 

I 

h6g 

4.0 

(( 

09  991 

f  Near  horizon 

1  Not  fainter 

METHOD  BY  STEPS: 


Jan.       14 

15.7 

II-III 

h  3  T  4  g 

2.9 

2.9 

2.8 

10  286 

Misty 

T6e 

2.7 

23 

15.2 

I 

h  3  T  3  g 

3.4 

3.4 

3.4 

295 

Difficult 

Feb.       12 

14.6 

I 

h5T3g 

4.4 

4.2 

4.4 

315 

T4e 

4.7 

24 

14.8 

I 

Tig 

5.7 

6.0 

327 

T3e 

5.7 

T6c 

6.7 

27 

15.3 

HID 

g  2  T  3  c 

9.2 

9.7 

9.2 

330 

TOe 

8.7 

Mar.       13 

14.7 

III 

g  3  T  7  c 

7.7 

8.5 

8.3 

344 

Near  hor 

TOe 

8.7 

17 

14.4 

I 

g  3  T  3  c 

9.7 

9.7 

9.7 

348 

Tl  e 

9.7 

Sept.        7 

15.5 

I 

a  1  T  3  b 

19.6 

19.7 

19.7 

•      522 

Near  hor 

16 

15.5 

II 

d  3  T  2  a 

17.3 

17.2 

17.2 

531 

T5b 

17.2 

23 

15.8 

113 

c  3  T  3  a 

15.8 

15.8 

15.8 

538 

d  1  T 

15.7 

Oct.       12 

15.6 

g  3  T  3  d 

10.7 

10.7 

11.4 

557 

cOT 

12.7 

18 

15.1 

ii 

glT3c 

8.7 

8.5 

563 

TOe 

8.7 

T  4  d 

8.2 

Nov.      11 

15.8 

i 

h  4  T  2.  5  g 

4.1 

4.1 

4.1 

587 

17 

15.3 

h  3  T  3  g 

3.9 

3.4 

3.6 

593 

Dec.         7 

15.7 

h  3  T  3  g 

3.9 

3.4 

3.6 

613 

Jan.         8 

16.3 

i 

g3T 

9.7 

9.7 

9.7 

645 

e  1  T  3  c 

9.7 

076 


T  Arid  is 


Series  IV. 


21 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

h 

88  Jan.        11 

14.0 

g  2  Tie 
T  5  e 

8.2 

7.7 

8.0 

8.0 

10  648 

17 

14.5 

e  1  T  1  c 

9.7 

9.7 

9.7 

654 

Feb.         7 

15.0 

e  1  T  3  o 

11.7 

11.7 

11.7 

675 

T  3  d 

11.7 

14           14.2 

e  3  T  2  c 

11.2 

11.0 

11.1 

682 

Mar.         6 

14.7 

e  1  T  3  a 

14.8 

14.3 

14.5 

703 

13 

14.4 

c  2  d  3  T  2  a 

17.3 

17.2 

17.4 

710 

c5T 

17.7 

Sept.        0 
Oct.    '      7 

15.3 
16.5 

e  2  T  2  c 
h  8  T  2  e  1  g 

10.7 
7.3 

10.7 
7.0 

10.7 
7.1 

887 
918 

1090  p  Persei  (Algol)  SERIES  V. 

(1900)  3h  lm  408    (+38.89);     +40°  34'.2    (+0'.23) 

Period  :  2d  20h  48m  ±     ;   Variation  :  2*3— 3*5. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

Y  Andr. 

11 

+41°395 

0.0 

2.3  HP. 

f  Pers. 

19 

52°654 

4.5 

3.0     " 

£ 

32 

39°895 

6.5 

2.9     " 

f 

•» 

30 

31°666 

7.0 

2.9     " 

ft 

26 

47°876 

9.3 

3.1     " 

/' 

20 

38°630 

fll.6 
1  12.1 

3.4-4.2 

K 

23 

44°631 

12.6 

4.1  HP. 

i/ 

28 

+42°815 

13.2 

3.9     " 

Notes : 

As  in  the  case  of  U  Cephei,  these  observations  were  made  mainly  for  practice  between  the  regular  observations 
of  long  period  variables.  For  this  reason  the  branches  of  the  light  curve  observed  are  not  symmetrical  with  regard 
to  the  minimum. 

The  comparison  star//,  which  is  irregularly  variable,  has  two  different  steps  assigned  in  the  scale:  11.6  and 
12.1,  derived  respectively  from  the  observations  on  November  12  and  April  12. 


22 


1090 


/?  1'ersei 


Series   V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

'2400000+ 

Remarks 

METHOD  BY  STEPS: 

87  Mar.       22 

14h   3m 

*  i  ,3  o  : 

7.3 

7.3 

10  353 

Watch  corr.  —  -2m  applied 

14  12 

£  2  ;3  1  3 

8.4 

8.4 

8.3 

Eph.  Helioc.  Min.  13"  27m 

C  1  /5 

8.0 

14  21 

e  1  8  2  <S 

7.4 

7.4 

7.3 

C  0  > 

7.0 

14  34 

/51e 

5.5 

5.9 

j3  1  C 

6.0 

/J   3  5 

6.3 

14  43 

r  1  0  1  £ 

5.5 

5.5 

5.3 

/3  2  C 

5.0 

15  14 

r  A  4  /5  2  e 

4.3 

4.3 

4.2 

A  —  Andromedee 

,53  C 

4.0 

16     1 

,5  2  £ 

4.5 

4.3 

,53  C 

4.0 

/?  1  Y 

3.5 

,54'? 

5.3 

87  Nov.      12 

14  26 

III 

'?  2  /?  2  /;  ? 

10.5 

10.5 

10.5 

858 

Watch  corr.  <  .V" 

14  39 

<*  1  ,5  2  /> 

10.0 

10.1 

9.3 

Eph.  Helioc.  Min.  l()h  1  7m 

C  1  /5  2  * 

8.8 

8.4 

14  50 

$  1  0 

10.3 

10.0 

C2  /32  * 

9.8 

9.8 

15     4 

d  1  /3  0.5  P 

10.7 

10.8 

10.0 

C2/33  A; 

9.3 

9.2 

15  /7 

a  1/3  0.5  /> 

10.7 

10.8 

9.6 

^  O    o  Q    ,, 

V      ^J     P     O     A/ 

9.3 

9.2 

e  1.5/3 

8.0 

15  30 

^2^0/0 

11.5 

10.1 

C    3    p1    2    « 

10.3 

10.4 

e  2.5/3 

9.0 

1544 

5  2  ,5  0  /> 

11.5 

10.2 

C  3  ,3  2.5  K 

10.1 

10.1 

e  2.5  /3 

9.0 

16    0 

<5  1  fl  1  /» 

10.5 

10.5 

9.7 

j 

C  2.5  /3  3  * 

9.6 

9.6 

>  Hazy 

£    2   ,5 

8.5 

) 

16  15 

<5  0  ft  2  ^ 

9.5 

9.2 

C  2/3  2/> 

9.3 

9.3 

e  1  /3  2  ;» 

9.6 

8.2 

16  30 

<5  0  /3  3/> 

9.0 

7.9 

C  1  /5  5  * 

7.8 

7.9 

e  0.5/3 

7.0 

88  Apr.       12 

14  15 

II-III 

e  0  C  1  ft  3  /> 

8.6 

8.3 

8.2 

740 

Watch  corr.  Om 

/35   K 

7.6 

14  22 

eO:2/53v 

9.2 

9.3 

9.5 

<5  1  /3  4  « 

9.5 

10.0 

14  31 

e2/33v 

9.4 

9.1 

9.5 

3  1  /3  4  e 

9.5 

10.0 

1090 


Persei 


Series   V. 


23 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

88  Apr.       12 

14*41" 

e  3  /?  3  * 

9.9 

9.8 

10.3 

10  740 

<J  2  ft 

11.3 

14  50 

£  3/3  3  v 

9.9 

9.8 

10.3 

'5  2  ,3 

11.3 

15     7 

£  4  /3  3  v 

10.4 

10.3 

10.9 

a  3  £  1  /» 

11.7 

11.1 

15  29 

'^3/33. 

11.3 

11.0 

11.2 

Eph.Helioc.  Min.  15h  28" 

Correction  to : 

"OBSERVATIONS   OF  VARIABLE  STARS 

made  in  the  years  1884-1890,   Washington  1901. : 
Page  22,  Nov.  12, 

for  15h    7m    read    15h    17m 
"     15    14         "        15      44 


,s  III. 

21) 


gn. 


3 
•5 
9 
3 
5 
1 


1222 


A*  Persei 


Series  111. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


83  Sept. 

30           15.6 

I 

R  =  a 

Oct. 

6 

14.9 

I 

a  2  b 

29 

16.9 

I 

R  invis. 

Nov. 

1 

15.7 

I 

« 

3 

15.5 

I 

« 

84  Jan. 

17 

15.1 

I 

R>e 

n>c  (z) 

19 

14.8 

II 

a  6.5  c 

a  6  c  (Z) 

20 

14'.  8 

II 

a  5  c 

a  5  c  (Z) 

21 

14.7 

II 

a  6c 

a  4  c  (Z) 

23 

14.8 

I 

a  4c 

a  4  c  (Z) 

24 

14.7 

I 

a  4  c 

a  3  c  (Z) 

30 

14.9 

I 

a  3  c 

a  0  c  (Z) 

31 

14.8 

III 

a  3  c 

a  0  c  (Z) 

Feb. 

14 

'l4.5 

III 

d  5  a 

d  4  a  (Z) 

19 

14.8' 

I 

d  2  a 

d  2  a1  (Z) 

Mar. 

23 

14.5 

III 

e  7  d 

e  7  d  (Z) 

Apr. 

2 

15.1 

ID 

e8.5d 

e  9  d  (Z) 

Sept. 

12 

15.8 

I 

d  8  f 

d  7  a 

24 

15.4 

I 

e9d 

e7f 

e6a 

Oct. 

12 

15.6 

I 

e6d 

e5  f 

17 

15.4 

I 

e7d 

e5f 

Nov. 

8 

16.1 

II 

d  7f 

d  5  a 

18 

15.6 

I 

f4a 

f3  b 

Dec. 

22 

14.7 

I 

R  invis. 

85  Jan. 

6 

15.3 

I 

R  invis. 

Mar. 

7 

15.7 

I 

tt 

Apr. 

10 

14.6 

II 

R  barely  vis. 

Oct. 

8 

15.9 

I 

a  4  c 

20.3 

09  084 

.20.7 

090 

>24 

>24 

113 

a 

u 

116 

tt 

u 

118 

23 

23 

193 

23 

22.5 

22.4 

195 

22.3 

22.0 

22.0 

196 

22.0 

22.3 

22.0 

197 

21.7 

21.7 

21.7 

199 

21.7 

21.7 

21.5 

200 

21.3 

21.3 

20.8 

206 

20.3 

21.3 

20.8 

207 

20.3 

16.5 

16.1 

221 

15.7 

14.2 

14.2 

226 

14.2 

8.9 

8.9 

259 

8.9 

10.8 

11.1 

269 

11.4 

16.9 

17.5 

432 

18.0 

11.4 

12.1 

444 

12.6 

12.2 

7.6 

8.3 

462 

9.0 

8.9 

9.0 

467 

9.0 

16.4 

16.5 

489 

16.5 

18.9 

19.1 

499 

14.9 

>24 

533 

u 

548 

(t 

608 

it 

642 

21.7 

21.7 

823 

1222 


R  Persei 


Series  III. 


25 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000 

Remarks 

85  Oct.        13 

h 
15.8 

I 

a  7  c 

22.7 

22.7 

09    828 

b  1  c 

22.6 

20 

15.8 

II 

f  2  a 

18.5 

17.9 

844 

(1  6  a 

17.3 

Nov.         4 

16.0 

II 

d  8  f 

16.9 

16.7 

850 

d  5  a 

16.5 

9 

15.7 

I 

d  6  f 

15.9 

15.8 

855 

d  4  a 

15.7 

12 

15.4 

II 

"  d  2  f  ! 

13.8 

13.8 

858 

Dec.          2 

16.0 

I 

e  6  d 

7.6 

7.4 

878 

e4f 

7.2 

i    0 

15.3 

I 

e3f 

5.4 

6.5 

882 

e6d 

7.6 

11 

15.8 

I 

e  7  d 

8.9 

10.8 

887 

e  6  f 

12.6 

80  Jan.          9 

15.4 

I 

a  2  b 

20.7 

20.3 

916 

f4b 

19.8 

30 

16.2 

II-III 

b  8c 

23.5 

23.5 

937 

Feb.         2 

15.7 

III 

R  in  vis. 

>24 

940 

7 

15.7 

I 

R<c 

it 

945 

22 

15.9 

I 

R  invis. 

a 

960 

Apr.         2 

15.2 

I 

« 

ti 

09  999 

. 

METHOD  BY  STEPS: 


14 

16.1 

III 

e  10  R  5  d 

8.9 

8.5. 

8.5 

10  286 

RIO  f 

8.0 

23 

15.5 

I 

e  8  R  8  d 

6.9 

6.4 

7.1 

295 

RIOf 

8.0 

12 

14.8 

I 

elO(?)R5d 

8.9 

8.5 

9.1 

315 

RSf 

~10.0 

24 

15.1 

I 

R2d 

10.7 

11.4 

327 

R6f 

12.0 

27 

15.8 

III]) 

Rl  d 

11.7 

12.4 

330 

R5f 

13.0 

13 

14.9 

III 

d  6  R  2  f 

17.4 

16.7 

17.1 

344 

R3a 

17.3 

17 

14.7 

I 

a4R? 

24.3 

24.4 

348 

b  2R 

24.5 

24 

15.7 

I 

a  3  R  2  c 

22.5 

22.3 

22.4 

355 

7 

15.6 

I 

d  1  R  2  f  ' 

14.9 

14.5 

14.7 

522 

16 

15.6 

II 

d  3  R2f 

15.9 

15.9 

16.2 

531 

d  3  R  3  a 

16.5 

16.5 

23 

16.0 

II  D 

d  4R2  f 

16.4 

16.2 

16.3 

538 

12 

16.0 

a  1  R  2  b 

20.9 

21.0 

21.0 

557 

f3R 

21.0 

18 

15.3 

II 

R  =  c 

23.7 

23.7 

563 

8 

16.6 

I 

R  inv. 

>24 

645 

7 

15.4 

I 

c3R 

26.7 

26.7 

675 

14 

15.1 

I 

c2R 

25.7 

25.7 

682 

Near  hor 


1222 


It  -fersei 


Scries  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

11 

Mean 

2400000 

Remarks 

88  Mar.         6 

h 

15.0 

I. 

d  2  R  1  a 

17.0 

17.8 

17.6 

10    703 

R3  b 

19.5 

*) 

R2f 

16.0 

*) 

13 

14.8 

I 

eS  R2d 

9.4 

10.2 

9.8 

710 

Apr.         3 

14.8 

II 

e  8  R  2  d 

9.4 

10.2 

11.6 

731 

e8R5b 

12.8 

13.9 

11 

15.0 

I 

e  7  R  3  d 

8.4 

8.9 

10.3 

739 

e  7  R  6  a 

10.7 

10.9 

e7  R7  b 

11.3 

11.3 

Oct.         7 

17.0 

I 

d4Rl  f 

16.9 

16,9 

16.9 

918 

The  original  record  has  R  2  b,  R  3  f,  contran7  to  the  scale  of  steps. 


1855  R  Aurigae  SERIES  III, 

(1900)  5h  9ra  13s     (+4.8S3);     +53°  28'.4     (+0'.07) 

Period:  460d2;          Variation:  78!— 12|M 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps. 

Magn. 

a 

1 

-f53°872 

0.0                (6.5)  BD. 

g 

3 

878 

10.0                 8.4 

c 

4 

884 

15.5 

8.7 

b 

9 

879 

17.5                9.0 

d 

8 

+  53°880 

22.0                9.0 

e 

23 

27.0              10.3 

f 

26 

30.3 

10.7 

1855 


R  Aurigac 


Series  III. 


27 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Moan 

2400000 

Remarks 

DECIMAL  METHOD: 


31 

14.9 

III 

c  4  (1  ? 

1 

14.4 

II 

cl  2e 

7 

15.3 

II 

c!3e 

9 

15.3 

III 

d  4e 

11 

14.8 

ID 

cl  5  e 

14 

15.4 

ID 

d  0  e  ? 

15 

14.9 

ID 

d  7e? 

10 

14.9 

ID 

d  8e 

18 

15.0 

IDD 

d  9e 

23 

15.0 

ii 

d  12  e 

24 

14.7 

i 

d  13  e 

d  5f 

20 

14.5 

ii 

d  Of 

27 

14.0 

in 

d  7f 

28 

14.7 

i 

d8f  ! 

29 

14.5 

ii 

d  8f 

d  8.5  f 

5 

14.9 

i 

cl  10  f 

d  9f? 

7 

.15.4 

ii 

d  10.5  f 

10 

14.9 

i 

d  11  f? 

11 

15.0 

n  D 

R<f 

27 

15.7 

I 

R<f 

2 

15.5 

I 

R  invis. 

30 

16.1 

I 

n 

29 

16.6 

I 

u 

17 

16.0 

I 

c  4  e 

c  4  e  (Z) 

19 

15.1 

II 

c  4  e 

c8d 

c  2  e  ?  (Z) 

c5d?   " 

20 

14.0 

II 

c  4  e 

c7  d 

c  0  e  (Z) 

cSd   " 

21 

14.7 

II 

c  4  e 

c9d 

c  2  e  (Z) 

c  4  d  " 

23 

14.5 

I 

c  2e 

c8d 

c  5  e  (Z) 

c  7  d  " 

24 

14.8 

II 

c3e 

c6d 

30 

14.7 

II 

c  4  e 

c7  d 

c  3  e  (Z) 

c5  d 

(18.1) 
23.0 

(18.1) 
23.0 

08  901 
902 

R  <  c  &  d 

23.5 

23.5 

908 

24.0 

24.0 

910 

-•'• 

24.5 

24.5 

912 

25.0 

25.0 

915 

25.5 

25.5 

916 

26.0 

26.0 

917     Clouds 

26.5 

26.5 

919 

(28.0) 
(28.0) 
26.2 

(28.0) 
27.1 

924 
925 

i.  e.,  R  <  e 

27.0 

27.0 

927 

27.8 

27.8 

928 

28.6 

28.6 

929 

28.6 

28.8 

930 

29.0 

30.3 

29.9 

936 

29.5 

30.7 
31.3 

30.7 
31.3 

938 
941 

i.  e.,  R  <  f 

>30 

>30 

942 

Near  lior. 

u 

u 

08  958 

Very  low 

>40 

09  056 

Power  60 

u 

084 

d        a 

d 

113 

20.1 

20.1 

193 

20.1 

20.1 

20.4 

195 

20.7 

(17.8) 
(18.8) 
20.1 

20.8 

196 

20.1 

22.4 

20.7 

20.1 

19.4 

197 

21.4 

17.8 

18.1 

17.8 

20.0 

199 

20.7 

21.3 

20.1 

19.0 

19.2 

200 

19.4 

20.1 

19.5 

206 

20.1 

19.0 

18.8 

1855 


/  Auriyac 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

h 

84  Jan.       31 

15.1 

III 

c  3  e 

19.0 

19.4 

09  207 

cS  d 

20.7 

c  3  e  (Z) 

19.0 

c5  d 

18.8 

Feb.       14 

15.7 

III 

c3  e 

19.0 

20.6 

221 

c9  d 

21.4 

c  5  e  (Z) 

21.3 

c8  d 

20.7 

19 

14.7 

I 

c6e 

22.4 

20.8 

226 

c  9  d 

21.4 

c  4  e  (Z) 

20.1 

c6  d 

19.4 

Mar.       23 

14.9 

III 

c  5  e 

21.3 

21.0 

259 

cS  d 

20.7 

c  5  e  (Z) 

21.3 

c8  d 

20.7 

April       2 

15.5 

113) 

R>g(H&Z) 

<10 

269 

16 

15.3 

i 

ft6g 

6.0 

5.0 

283 

a  4  g 

4.5 

May       13 

15.0 

ii 

a  2  g 

2.0 

3.0 

310 

a  4  g 

4.0 

Sept,      12 

15.9 

i 

II  barely  vis. 

>40 

432 

24 

15.6 

i 

U                        (( 

i 

444 

Oct.       12 

15.8 

i 

R  invis. 

i 

462 

19 

15.5 

i 

R  barely  vis. 

i 

469 

Nov.        8 

16.3 

ii 

U                            it 

i 

489 

18 

15.8 

i 

R  invis. 

i 

499 

Dec,       22 

15.2 

ii 

a       a 

< 

533 

85  Jan.          9 

15.9 

i 

R  invis. 

i 

551 

Mar.         7 

15.9 

i 

R  <e 

>30 

608 

April       7 

16.7 

i 

R<  e 

u 

639 

22 

16.0 

D 

d  9.5  e 

26.8 

26.8 

654 

Mav        3 

15.2 

in 

d  7  e  ? 

25.5 

25.5 

665 

12 

15.1 

I 

d  7  e? 

25.5 

25.5 

674 

Oct.         8 

16.9 

I 

g4b 

13.0 

13.3 

823 

Eye  tired. 

g.3b 

13.6 

13 

16.9 

I 

c5  d 

18.8 

17.8 

828 

c  6  b 

16.7 

29 

16.7 

d5  f 

25.3 

24.2 

844 

d  2  e 

23.0 

Nov.        4 

16.0 

II 

d4  e 

24.0 

24.0 

850 

Difficult. 

9 

15.2 

I 

d  7  e 

25.5 

25.5 

855 

« 

12 

15.5 

II 

d  7.5  e 

25.8 

25.8 

858 

Dec.         2 

15.3 

I 

R  invis. 

>30 

878 

86  Feb.       23 

15.0 

I 

R  invis. 

a 

961 

Mar.       25 

14.9 

I 

«         n 

a 

991 

April       2 

15.4 

I 

(>             U 

u 

09  999 

1855 


R  Aurigac 


Series  III. 


29 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

Sept. 

Nov. 


Feb. 


Mar. 


12 
24 


7 

11 
17 
18 

8 
11 
17 

7 

14 

6 

13 


April       3 
11 


Oct. 


METHOD  BY  STEPS: 


16.1 

III 

g  7  R  5  d 

17.0 

17.0 

15.9 

g  7  R  2  c 

15.3 

14.3 

15.8 

I 

c  3  R  4  d 

18.3 

18.3 

17.8 

c3Rl  b 

17.5 

17.0 

15.2 

I 

d  3R2e 

25.0 

25.0 

25.0 

15.2 

I 

e3  R 

30.0 

29.5 

d  7R 

29.0 

I 

R  <  d 

>22 

16.2 

I 

d  3R3e! 

24.5 

24.5 

24.5 

15.4 

I 

d  3  R2e 

25.0 

25.0 

25.0 

15.7 

I 

g4R2c! 

13.8 

13.7 

13.8 

16.8 

I 

g  2  R  3  c 

12.3 

12.2 

12.3 

15.0 

I 

g  2  R  3  c 

12.3 

12.2 

12.3 

15.0 

I]) 

K  2  R  3  c 

12.3 

12.2 

12.3 

15.5 

I 

a  8  R  2  g 

8.0 

8.0 

9.0 

a  8  R  4  c 

9.8 

10.3 

15.1 

I 

a  7  R  3  g 

7.0 

7.0 

7.7 

a  7  R  6  c 

8.3 

8.6 

15.1 

I 

a  6  R  3  g 

6.5 

6.5 

7.2 

a6R6c 

7.8 

7.8 

14.8 

I 

R2g 

8.0 

8.8 

R6c 

9.5 

14.9 

III 

g  3  R  2  c 

13.3 

13.3 

13.3 

15.1 

I 

g4R3c 

13.3 

13.3 

13.3 

17.0 

I 

R  in  vis. 

>30 

315 
327 


522 
587 
593 
621 
645 
648 
654 
675 

682 
703 
710 

731 
739 

918 


2100  U  Orionis  SERIES  II. 

(1900)  5"  49m  53"    (+  33.56);     +  20°  9'.5     (+  O'.Ol) 

Period  :  375d ;          A^ariation  :  7M  —  <  12M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

B 

2 

+19°1126 

0.0 

(6.3)  BD. 

C 

— 

+  19°1110 

3.8 

(6.0)  " 

E 

3 

+  20°1156 

9.2 

8.0 

k 

4 

+  20°1171 

12.3 

8.2 

P  . 

5 

+  20°1168 

18.3 

8.5 

X 

11 

+20°1172 

23.3 

9.1 

z 

14 

+  20°1169 

25.9 

9.4 

Notes : 
The  observations  of  this  star  commenced  soon  after  its  discovery  (1885)  by  Gore,  and  may  for  this  reason  be  of  value. 


30 


2100 


U  Orionis 


Series  II. 


1800* 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

METHOD  BY  STEPS: 


86  Dec.         7 

h 

15.5 

B4C2U8E 

3.5 

4.9 

4.2 

10  248 

8 

15.0 

B3C5U8E 

5.0 

5.9 

5.5 

249 

14 

15.1 

B6C3U8E 

4.0 

5.3 

4.7 

255 

15 

14.8 

I 

B4C5U8E 

5.0 

5.9 

5.5 

256 

29 

15.3 

I 

B2C3U8E 

4.0 

5.3 

4.7 

270 

87  Jan.        14 

16.5 

III 

B  5  U  4  k 

6.7 

6.7 

7.1 

286 

B5U7/> 

8.2 

7.6 

23 

16.3 

I 

B7  U3k 

8.2 

8.6 

8.8 

295 

B  7  U  7  t> 

9.2 

9.2 

28 

14.5 

II 

B8U4k 

8.2 

8/2 

9.0 

300 

B8U7/> 

9.7 

9.8 

Feb.         8 

15.8 

U4k 

8.3 

8.8 

311 

U9/> 

9.3 

12' 

15.3 

I 

U4k 

8.3 

10.3 

315 

U6/> 

12.3 

15 

15.8 

k  1  U  5  P 

13.3 

13.3 

13.3 

318 

16 

14.7 

II 

k  1  U  5p 

13.3 

13.3 

13.3 

319 

24 

15.3 

I 

k  2  U4/> 

14.3 

14.3 

14.3 

327 

27 

16.1 

III 

k3  U4/> 

14.8 

14.9 

14.9 

330 

Mar.       13 

15.8 

III 

k5U2/> 

16.8 

16.6 

16.7 

344 

17 

15.2 

I 

k4U2/> 

16.3 

16.3 

16.3 

348 

•27 

15.5 

i>  2  U  2  x 

20.3 

20.3 

20.3 

358 

28 

16.2 

II 

/'  2  U  2  x 

20.8 

20.8 

20.8 

359 

Apr.       18 

15.1 

II 

x  1  Ul  z? 

24.6 

24.6 

24.6 

380 

20 

14.8 

I 

x2Ul  z 

25.1 

25.0 

25.1 

382 

25 

15.5 

I 

x  2  U  0.5  z 

25.4 

25.4 

25.4 

387 

88  Jan.        11 

15.3 

I 

El  U2k 

10.3 

10.2 

11.0 

648 

El  U5^ 

11.8 

11.6 

17 

15.2 

ID 

El  U2k 

10.3 

10.2 

11.0 

654 

El  U5  P 

11.8 

11.6 

Feb.         7 

15.8 

I 

E2U  1  k 

11.3 

11.3 

10.9 

675 

B7U5/> 

10.2 

10.7 

14 

15.8 

I 

k  1  U  5  P 

13.3 

13.3 

13.3 

682 

Mar.        6 

15.3 

I 

k  3  U  2  P 

15.8 

15.9 

15.9 

703 

13 

15.0 

I 

k  3  U  3  '  P 

15.3 

15.3 

15.3 

710 

Apr.         3 

15.5     • 

III 

k5UO/> 

17.8 

18.3 

18.1 

731 

11 

15.2 

I 

p  4  U  2  x 

21.8 

21.6 

21.7 

739 

2539  R  Canis  Minoris         SERIES  IV. 

(1900)  7h  3m  13s  (+3.830);     +10°  10'.9     (-0'.09) 

Period  :  337d7 ;  Variation  ;  7^—10^ 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

c 

+9°1539 

0.0 

7.4BD. 

a 

10°1416 

6.7 

8.4 

b 

10°1429 

11.0 

8.3 

k 

9°1531 

15.0 

8.9 

d 

10°1422 

18.7 

9.0 

e 

10°1421 

24.7 

9.5 

f 

+  10°1418 

28.2 

9.5 

Notes  : 

Two  other  comparison  stars  were  used  only  once  (1887,  March  24),  and  are  omitted  in  the  scale  and  in  the 
reductions.     They  are : 

g  =  BD.  +  10°1432,  9M0 
h  =  1433,  9.3 


(31) 


32 


2539 


Canis  Minoris 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II         Mean 

2400000 

Remarks 

DECIMAL  METHOD: 

h 

83  Dec.       21 

15.6 

III 

a8b 

10.1 

9.9 

09  166 

a  7  b  (Z) 

9.7 

25 

16.7 

III 

c7b,R>a!! 

7.7 

6.9 

170 

c  5  b  (Z) 

5.5 

a  2b   " 

7.6 

28 

16.2 

II 

c  8  a 

5.4 

6.1 

173 

R  =  a  (Z) 

6.7 

84  Jan.       "  3 

15.4 

III 

c  9  a 

6.0 

6.4 

179 

c  10  a  (Z) 

6.7 

5 

15.3 

ID 

c  6  a 

4.0 

3.4 

181 

c  4  a  (Z) 

2.7 

15 

14.7 

i 

c6a 

4.0 

4.0 

191 

c  6  a  (Z) 

4.0 

17 

14.2 

i 

c  4  a 

2.7 

2.4 

193 

c  3  a  (Z) 

2.0 

19 

15.5 

ii 

c  5  a 

3.4 

3.7 

195 

c  6  a  (Z) 

4.0 

20 

14.3 

ii 

c  4  a 

2.7 

2.7 

196 

c  4  a  (Z) 

2.7 

21 

15.1 

ii 

c  3  a 

2.0 

1.7 

197 

c  2  a  (Z) 

1.3 

23 

14.3 

i 

c3a 

2.0 

1.7 

199 

c  2  a  (Z) 

1.3 

24 

15.1 

ii 

c3  a 

2.0 

2.4 

200 

c  4  a  (Z) 

2.7 

30 

14.5 

ii 

c  4  a 

2.7 

2.4 

206 

c  3  a  (Z) 

2.0 

31 

15.3 

in 

c3a 

2.0 

2.4 

207 

c  4  a  (Z) 

2.7 

Feb.       14 

15.1 

in 

c  3  a 

2.0 

2.4 

221 

c  4  a  (Z) 

2.7 

19 

15.4 

i 

c3a 

2/0 

1.7 

226 

c  2  a  (Z) 

1.3 

,  -  "' 

Mar.       23 

15.1 

in 

c  7  a 

4.5 

4.5 

259 

c  7  a  (Z) 

4.5 

Apr.         2 

15.8 

12 

c8a 

5.4 

4.7 

269 

c  6  a  (Z) 

4.0 

20 

14.6 

in 

bid 

11.8 

13.0 

287 

b  4  d  (Z) 

14.1 

May       13 

15.3 

ii 

R<d 

>19 

310 

Nov.       18 

16.1 

i 

a8  b 

10.1 

11.4 

499 

a  5  d 

12.7 

Dec.       22 

15.5 

ii 

c6a 

4.0 

3.7 

533 

c3b 

3.3 

2539 


R  Canis  Minoris 


Series  IV. 


33 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

h 

85  Jan.          9 

16.0 

I 

c5  b 

5.5 

4.8 

09  551 

c  6  a 

4.0 

.Mar.       18 

15.8 

11 

b$d 

13.3 

13.0 

619 

a  5  d 

12.7 

Apr.         7 
May         3 
12 

16.8 
15.7 
15.1 

I 
III 
I 

b9d 

R  in  vis. 
u 

17.9 

17.9 

>28 

u 

639 
665 
674 

Near  hor. 

85  Dec.         2 

16.1 

I 

c3  b 

3.3 

3.3 

878 

6 

15.4 

I 

c3b 

3.3 

3.4 

882 

• 

c  5  a 

3.4 

11 

15.6 

I 

c  4  b 

4.4 

3.9 

887 

c  5  a 

3.4 

86  Jan.        11 

15.1 

I 

a  3  b 
a  2  d 

8.0 
9.1 

8.6 

918 

R  very  red 

31 

15.3 

III 

a  3  b 

8.0 

8.0 

938 

aid 

7.9 

Feb.         3 

15.4 

I 

a  4  b 

8.4 

8.8 

941 

a2d 

9.1 

7 

15.9 

I 

a  2  b 

7.6 

7.8 

945 

R  red,  difficult 

aid 

7.9 

22 

16.0 

I 

a7b 

9.7 

10.0 

960 

«                      « 

a3d 

10.3 

25 

15.9 

I 

a  7  b 
a5d 

9.7 
12.7 

11.2 

963 

Very  difficult 

Mar.         2 

15.8 

I 

a6  b 

9.3 

9.2 

968 

a  2  d  ! 

9.1 

21 

15.5 

II])]) 

b6d 
a  7  d 

15.6 
15.1 

15.4 

987 

25 

14.6 

I 

b2d 

12.5 

12.0 

991 

a4d 

11.5 

Apr.         1 

15.4 

I 

b3d 
a  5  d 

13.3 
12.7 

13.0 

09  998 

19 

15.6 

ID 

b6d 
aSd 

15.6 
16.3 

16.0 

10  016 

27 

14.9 

II 

d  2e 
d  1  f 

19.9 
19.6 

19.8 

024 

Eye  tired 

May         1 

15.1 

I 

d  5e 
d  3f 

21.7 
21.6 

21.7 

028 

6 

16.0 

I-II 

R<e 

>25 

033 

Near  hor. 

METHOD  BY  STEPS: 


14 

16.3 

IV 

a  2  R  2  b 

8.9 

8.9 

8.8 

286 

RIOd 

8.7 

23 

16.0 

I 

a  4  R  8  d 

10.7 

10.7 

11.5 

295 

b  2R8d 

11.9 

12.5 

12 

I 

b  4  R  5  d 

14.4 

14.4 

14.4 

315 

24 

15.3 

I 

b3R5d 

13.9 

13.9 

13.8 

327 

a7  R 

13.7 

34 


2539 


/'  Cattis  Minoris 


Series  1 V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

11 

Mean 

2400000+ 

Remarks 

87  Feb.       27 

h 

16.0 

HI]) 

b4R2d 

15.9 

16.1 

16.0 

10  330 

Mar.       13 

15.1 

III 

b  7  R  2  d 

17.4 

17.0 

17.3 

344 

b  7  R  8  e 

17.4 

17.4 

17 

15.0 

I 

b  6R6e 

17.9 

17.9 

18.7 

348 

d  1  R  6  e 

19.2 

19.6 

24 

15.8 

I 

d2R 

20.7 

20.7 

355 

*)g  2  ROli  . 

Apr.       18 

15.8 

II 

e  1  R  2  f 

26.0 

25.9 

26.0 

380 

25 

16.1 

I 

f2R 

30.2 

30.2 

387 

Nov.      47 

15.8 

I 

a  2  R  3  b 

8.4 

8.4 

8.4 

593 

Near  bor. 

Dec.       15 

15.8 

I 

a  1  R  3  b 

7.9 

7.  .8 

7.9 

621 

88  Jan.         8 

16.9 

I 

b  2  R  5  d 

13.4 

13.2 

13.2 

645 

R  2k 

13.0 

11 

15.1 

I 

b  2  R  4  d 

13.9 

13.6 

13.2 

648 

b  2  R  3  k 

12.5 

12.6 

17 

15.1 

ID 

b  3  R  2  d 

15.4 

15.6 

15.0 

654 

Rlk 

14.0 

Feb.         7 

15.7 

i 

b4R4  d 

14.9 

14.9 

15.2 

675 

k  1  R4d 

15.4 

15.7 

14 

15.3 

i 

b5Rl  d 

16.9 

17.4 

17.1 

.     682 

k2R 

17.0 

Mar.         6 

15.2 

i 

d  3  R  2  e 

22.2 

22.3 

22.3 

703 

13 

14.9 

i 

d  4R2f 

24.5 

25.0 

25.6 

710 

- 

e  2  R  2  i 

26.5 

26.5 

Apr.         3 

15.2 

in 

f3R 

31.2 

31.2 

731 

f)  See  notes  above. 


3060  U  Cancri  SERIES  II. 

(1900)   8h  30m  3s    (  +  3/44);     +  19°  14'.4     (— 0'.20) 

Period  :  305d.O ;     Variation  :  9|M—  <  14M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

b 

6 

+19°2045 

0 

8.9 

c 

12 

2046 

9 

9.3 

d 

20 

2048 

15 

9.9 

- 

Notes  : 

This  variable  proved  to  be  too  faint  for  the  3-inch  glass.     When  it  was  marked  "  barely  visible,"  it  must  hav 
been  between  the  10th  and  llth  magnitude.     The  few  observations  may  serve  to  confirm  those  made  elsewher 


3060 


U  Cartcri 


Series  II. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

DECIMAL  METHOD: 

h 

85  Dec.         2 

16.5 

I 

bO  c 

8.1 

09  878 

6 

15.6 

I 

co  d 

12.0 

882 

11 

15.4 

I 

c7  d 

13.2 

887 

86  Jan.          5 

14.6 

I 

U  in  vis. 

<10M 

912 

31 

1-5.1 

II-III 

U  barely  vis. 

i 

938 

Feb.         3 

15.1 

I 

'               ' 

' 

941 

Just  a  glimpse  of  U 

7 

16.1 

I 

1                ' 

' 

945 

,    22 

15.5 

I 

'               ' 

1 

960 

A  faint  glimpse  of  'U 

March      5 

15.8 

I 

' 

• 

971 

U                            U                      il 

21 

15.1 

DDD 

' 

1 

'  987 

11                           «                      U 

Apr.         1 

15.3 

I 

;                        t 

' 

09  998 

27 

14.6 

II 

U  invis. 

10  024 

Eye  tired. 

87  Feb.       12 

15.4 

I 

U  barely  vis. 

U 

315 

3109  S  Cancri  SERIES  IV. 

(1900)  8h  38m  14"    (+3'.44);     +  19°  23'.6     (— 0'.21) 

Period  :  9d  llh  37m  45s;     Variation  :  8*2— Q.8. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

+19°2097 

0.0 

8.2  BD. 

b 

2094 

8.0 

8.5 

d 

2101 

9.6 

8.7 

c 

2088 

12.9 

9.0 

e 

2089 

21.8 

9.4 

k 

2086 

25.7 

9.5 

g 

+  19°2085 

29.6 

9.5 

Notes  : 


The  observations  of  this  Algol-Star  were  made  partly  for  the  sake  of  practice,  partly  with  the  view  of  study 
ing  its  general  light  curve.     While  pursuing  them  a  secondary  minimum  was  suspected. 


36 


3190 


S  Cancri 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

84  Nov.      20 

]6h14m 

I 

a2c 

2.6 

3.3 

09  501 

Near  hor. 

a  5  b 

4.0 

Dec.       22 

15  45 

II 

a  3  c 

3.8 

3.9 

533 

a5b 

4.0 

85  Jan.         9 

16    7 

I 

ale 

1.3 

1.5 

551 

a  2  b 

1.6 

Mar.       18 

15  55 

II 

a5b 

4.0 

4.0 

619 

April       7 

17     0 

I 

a  3  c 

3.8 

4.7 

639 

a7b 

5.6 

22 

16  35 

IJ 

a  3  c 

3.8 

5.9 

654 

a  10  b 

8.0 

25 

(14  30?) 

a  2e 

2.6 

4.3 

657 

Clouds. 

a4d 

3.8 

a  8  b 

6.4 

26 

(14  30?) 

III 

ale 

1.3 

2.1 

658 

a  3  d 

2.9 

28 

14  35 

II  DDD 

a  2  c 

2.6 

5.0 

660 

a3d 

3.8 

b  1  c 

8.5 

30 

15  20 

])DD 

a  2  c 

2.6 

4.0 

662 

a  3d 

2.9 

a8b 

6.4 

May         1 

16    7 

ill 

a  2  c 

2.6 

4.2 

663 

a  3  d 

2.9 

a9  b 

7.2 

3 

15  .0 

ill 

a  4  c 

5.2 

6.1 

665 

a  6d 

5.8 

a  9b 

7.2 

15     5 

a  3  c 

3.8 

4.9 

« 

a4d 

3.8 

a  9  b 

7.2 

•    5 

15  25 

II 

a  3  c 

3.8 

4.4 

667 

a  4d 

3.8 

a  7b 

5.6 

8 

14  40 

l 

a  2c 

2.6 

3.2 

670 

a3d 

2.9 

a  5b 

4.0 

9 

15  20 

a  4  c 

5.2 

6.0 

671 

Clouds. 

a5d 

4.8 

a  10  b 

8.0 

11 

15     5 

ill 

a3c 
a4d 

3.8 
3.8 

4.7 

673 

Cloudy. 

a  8  b 

6.4 

12 

14  52 

I 

a  3  c 

3.8 

4.7 

674 

a4d 

3.8 

a8b 

6.4 

13 

14  30 

III 

a  3  c 

3.8 

4.7 

675 

a  4d 

3.8 

a  8  b 

6.4 

3109 


S  Cancri 


Series  IV. 


37 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  May       14 

15"35m 

1 

a  4  c 

5.2 

6.0 

09  676 

ft  6  a 

4.8 

a  10  b 

8.0 

15 

15  50 

III 

a  3  c 

3.8 

4.7 

677 

a  4d 

3.8 

a  8  b 

6.4 

19 

15  14 

HID 

a  4  c 

5.2 

5.7 

681 

a5d 

4.8 

a9b 

7.2 

20 

15  20 

IDD 

a  4  c 

5.2 

6.0 

682 

a  5  d 

4.8 

a  10  b 

8.0 

21 

14  50 

I  DD 

a  8  b 

6.4 

6.4 

,683 

22 

15     0 

DDD 

a  8b 

6.4 

6.4 

684 

23 

15  15 

a8b 

6.4 

6.4 

685 

25 

15  55 

DDD 

a  8  b 

6.4 

6.4 

687 

30 

15  30 

I 

a8b 

6.4 

6.4 

692 

- 

June        4 

15  23 

I 

a8b 

6.4 

6.4 

697 

9 

15  25 

I 

aSb 

6.4 

6.4 

702 

Near  hor. 

10 

15  15 

I 

a  8.5  b 

6.8 

6.8 

703 

It              U 

Nov.      20 

16  20 

D 

a  7  b 

5.6 

5.6 

866 

Not  fainter!    Near  hor. 

23 

16     7 

II  DDD 

a  8b 

6.4 

6.4 

869 

u             u 

24 

15  58 

DDD 

a8b 

6.4 

6.4 

870 

25 

0     0 

a  8.5  b 

6.8 

6.8 

871 

Morning  of  25th. 

26 

15  54 

I 

a  7  b  ! 

5.6 

5.6 

872 

Dec.         2 

16  38 

I 

a  8.5  b  ! 

6.8 

6.8 

878 

6 

15  35 

I 

a  8  b 

6.4 

6.4 

882 

Near  hor. 

9 

15  50 

III 

a7b 

5.6 

5.6 

885 

"       "     not  fainter 

11 

15  16 

I 

b  10  e 

21.8 

22 

887 

U              11 

15  54 

I 

S  <e  slightly 

>22 

lh  before  Eph.  Min. 

12 

14  57 

HID 

a7b 

5.6 

5.6 

888 

Near  hor. 

13 

15  16 

D 

a  6  b 

4.8 

4.8 

889 

15 

0  30 

a  9  b  ! 

7.2 

7.2 

891 

17 

15  50 

a6b  ! 

4.8 

4.8 

893 

18 

15  10 

a  8  b  ! 

6.4 

6.4 

894 

18  24 

a8  b  ! 

7.2 

7.2 

" 

19 

15  16 

a  10  b  !  ! 

8.0 

8.0 

895 

18  36 

a9b! 

7.2 

7.2 

" 

20 

15  30 

ill 

a  7  b 

5.6 

5.6 

896 

23 

0  30 

a  8b 

6.4 

6.4 

899 

Morning  of  23d. 

24 

14  40 

II 

a  4b 

3.2 

3.2 

900 

15  12 

ill 

a9b 

7.2 

7.2 

n 

23  48 

a  10  b  ! 

8.0 

8.0 

u 

Morning  of  25th. 

25 

15  19 

ill 

a  6  b  ? 

4.8 

4.8 

901 

86  Jan.          5 

0  17 

a  4.5  b  ! 

3.6 

3.6 

912 

14  25 

I 

a  6b  ! 

4.8 

4.8 

" 

B 

14  50 

ill 

a  6.5  b 

5.2 

5.2 

913 

9 

15     0 

I 

a  6.5  b 

5.2 

5.2 

916 

10 

14  30 

I 

a  6  b 

4.8 

4.8 

917 

11 

14  50 

I 

a  5  b 

4.0 

4.0 

918 

13 

13  56 

ill 

a  '8  b 

6.4 

6.4 

920 

15     0 

in 

a  8  b 

6.4 

6.4 

38 


3109 


S  Cancri 


Series  IV. 


1800+ 

Or.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  Jan.       16 

15h   5m 

3) 

a  4  1) 

3.2 

3.2 

09  923 

20 

15     0 

DD 

a3b 

2.4 

2.4 

927 

near  }) 

21 

15     0 

3)3) 

a  6.5  b 

5.2 

5.2 

928 

22 

15     0 

a  4  b 

3.2 

3.2 

929 

30 

15  17 

n 

a  4b 

3.2 

3.2 

937 

31 

14  55 

in 

a  5  b 

4.0 

4.0 

938 

Feb.         1 

15  14 

i 

a  7  b  !  ! 

5.6 

5.6 

939 

2 

15     2 

in 

a  6  b  ! 

4.8 

4.8 

940 

3 

15     4 

i 

a4  b 

3.2 

3.2 

941 

6 

14  46 

e4-g 

24.9 

24.9 

944 

Eph.  Hclioe.Miu.  14"  3£ 

V 

15     2 

e  0  g  or  e  =  S 

21.8 

21.8 

i; 

15  15 

c  8  e 

20.0 

20.0 

it 

15  50 

c  7  e 

19.1 

19.1 

it 

b8e 

19.0 

16  14 

c  6  e 

18.2 

18.6 

u 

bSe 

19.0 

7 

15  59 

i 

a  10b,S  =  b! 

8.0 

8.0 

945 

8 

15  16 

in 

a  8  b 

6.4 

6.4 

946 

15 

15  (?) 

3>3> 

a  6  b 

4.8 

4.8 

953 

21 

15  (?) 

in 

a  5.5  b 

4.4 

4.4 

959 

22 

15  23 

i 

a  4  b 

3.2 

3.2 

960 

23 

14  45 

i 

a  2  b 

1.6 

1.6 

961 

.      25 

15  18 

i 

c  8  e 

20.0 

19.6 

963 

1£"  after  Eph.  Min. 

b9e 

20.4 

c5  k 

19.3 

Mar.         2 

15  55 

i 

a4b 

3.2 

3.2 

968 

3 

? 

in 

S  >  (a  5  b) 

<4.0 

<4.0 

969 

5. 

15  12 

i 

a4b! 

3.2 

3.2 

971 

7 

15  38 

in 

a8b! 

6.4 

6.4 

973 

15  51 

in 

a  6  b 

4.8 

4.8 

" 

9 

15  24 

i 

a6b! 

4.8 

4.8 

975 

21 

14  54 

H3)3) 

a4b! 

3.2 

3.2 

987 

22 

15  24 

113)3) 

a  4  c 

5.2 

5.2 

988 

25 

14  43 

I 

a5b 

4.0 

4.0 

991 

31 

15  10 

a3b 

2.4 

2.4 

997 

Apr.         1 

15  10 

i 

a  5  b 

4.0 

4.0 

998 

2 

14  52 

I 

a4b 

3.2 

3.2 

09  999 

4 

14  41 

i 

c8e 

20.0 

20.2 

10  001 

2h  after  Eph.  Min. 

b9e 

20.4 

14  44 

c4k 

18.0 

18.0 

.'i 

c3g 

17.9 

14  55 

c6e 

18.2 

17.6 

a 

c3k 

16.7 

c3g 

17.9 

b7e 

17.7 

15     7 

c6  e 

18.2 

17.5 

tt 

c3k 

16.7 

b7e 

17.7 

15  16 

c  6e 

18.2 

17.5 

n 

c3k 

16.7 

b7e 

17.7 

15  30 

c6  e 

18.2 

17.5 

a 

c3k 

16.7 

b7e 

17.7 

•  i  '.  . 

3109 


S  Caiicri 


Series  IV. 


39 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  Apr.         4 

15h48m 

cGe 

18.2 

18.0 

10  001 

c4k 

18.0 

c3g 

17.9 

5 

14  52 

III 

a  6b 

4.8 

4.8 

002 

7 

15  47 

I 

a  4b 

3.2 

3.2 

004 

18 

14  37 

HI])]) 

b  1  c 

8.5 

8.5 

015 

S  not>  (a  10  b)  ! 

15  47 

a  8.5  b  ? 

6.8 

6.8 

u 

Haze 

19 

15     0 

I])]) 

a  8b 

6.4 

6.4 

016 

27 

14  32 

11 

a4b 

3.2 

3.2 

024 

Eye  tired 

30 

15  49 

I 

a:3b! 

2.4 

2.4 

027 

Mav         1 

15     0 

I     • 

a  4b 

3.2 

3.2 

028 

6 

15  44 

l-II 

a4  b 

3.2 

3.2 

033 

7 

14  45 

III 

a8b 

6.4 

6.4 

034 

11 

14  18 

13) 

a6b 

4.8 

4.8 

038 

15 

15  31 

a  7  b 

5.6 

5.6 

042 

18 

15     2 

»i 

a4b 

3.2 

3.2 

045 

22 

15  38 

ii 

a4b 

3.2 

3.2 

049 

27 

15  54 

i 

a4b 

3.2 

3.2 

054 

Eye  tired 

37  Jan.       23 


METHOD  BY  STEPS: 


14  26 

I 

e3  S  2k 

24.3 

24.1 

23.8 

15  31 

I 

S7g? 

c  7  8  3  k 

(22.6) 
21.3 

21.9 

22.4 

S  1  e 

20.8 

16  14 

II 

S4g 
c8S4k 

25.6 
21.3 

21.4 

21.3 

82  e 

19.8 

S7g 

22".6 

295 


3477  R  Leonis  Minoris  SERIES  'III. 

(1900)  9h  39m  35s     (+3.S61);     +34°  5S'.3     (— 0'.27) 

Period:  370rt.5  ±  ;  Variation:  7M— 13M 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

B 

1 

+  35°2042 

0.0 

(6.5)  BD. 

C 

2 

+  34°2035 

3.8 

(6.3)  " 

E 

3 

+  34°2022 

5.5 

7.6 

H 

4 

+  35°2046 

9.5 

7.9 

Notes  : 


This  variable  was  observed  for  a  short  while  at  the  request  of  Mr.  H.  M.  Parkhurst.     The  comparison  stars 
an'd  their  designations  are  identical  with  those  published  by  him  in  the  Annals  of  H.  C.  O.,  vol.  XXIX,  page  150- 


40 


3477 


R  Leonis  Minor  is 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

11 

Mean 

2400000+ 

Remarks 

87 


METHOD  BY  STEPS: 


June  14 

15.8 

I 

E  2  R  2  II 

7.5 

7.5 

7.5 

10  437 

16 

16.7 

E  1  R  3  H 

6.5 

6.5 

6.5 

439 

Near  hor. 

19 

15.5 

I 

C  1  R  1  E 

4.7 

4.7 

4.7 

442 

21 

15.3 

GOR.2E 

3.7 

3.8 

3.8 

444 

23 

15.3 

I 

B  3  R  0  C  2  E 

3.4 

3.8 

3.6 

446 

25 

15.5 

II 

B3R1C 

2.9 

2.9 

3.1 

448 

Difficult 

B3R2  E 

3.3 

3.3 

July  9 

15.3 

II 

B2R1C 

2.4 

2.5 

2.5 

462 

Very  low 

R3  E 

2.5 

15 

15.0 

I 

B4R2  C 

2.9 

2.5 

3.2 

468 

u            u 

B4R1  E 

(4.3) 

(4.4) 

ar.        6 

15.4 

I 

R  invis. 

>10 

703 

3825  R  Ursae  Maioris         SERIES  III. 

(1900)  10h  37m  34s  (+4/32);     +69°  18'. Q    (— 0'.31) 

Period:  302dl±;        Variation:  7M— 13* 

Comparison  Stars  : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

1 

+  69°586 

0.0 

(4.7)BD. 

f 

2 

583 

2.1               (5.5)    " 

b 

5 

584 

10.2 

8.5 

c 

7 

+  69°585 

11.9 

9.1 

d 

12 

14.0 

«_/  .  tJ 

e 

14 

•     16.0             10.6 

i 

Notes  : 

As  the  observations  of  this  star  were  discontinued  before  Argelander's  method  by  steps  was  employed 
they  furnish  no  scale  for  the  comparison  stars.  An  artificial  scale  was  constructed  from  the  data  of  the  ASV 
The  scale  of  the  Atlas  does  not  comprise  the  stars  a  and/,  but  can  be  extended  by  extrapolation  by  means  of  th< 
formula  which  connects  steps  and  magnitude.  This  gives  the  steps  — 88  and  — 67  for  a  and  /  respectively.  B^ 
adding  +  88  to  all  the  numbers  of  the  scale  and  finally  dividing  by  10  the  above  scale  was  found. 


3825 


R  Ursfc  Maioris 


Series  III. 


1800-f 

Gr.  M.  T. 

Sky 

Comparisons 

I 

i 
II         Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


31 

,h 

14.4 

I 

a  8  b 

8.2 

80 
.  - 

08  842 

5 

14.2 

I 

a  8  b 

8.2 

8.2 

847 

7 

14.8 

I 

a  8  b 

8    9 

o  .  & 

8.2 

849 

9 

14.2 

I 

a  8  b 

8.2 

8.2 

851 

n 

14.8 

ID 

a  6b 

6.1 

6.1 

853 

12 

13.9 

ID 

a7  b 

7.1 

7.1 

854 

27 

14.5 

i 

a  10  b 

10.2 

9.3 

869 

a  7  c 

8.3 

28 

15.0 

ii 

a  6  c 

7.1 

(9) 

870 

R<b 

>10 

1 

15.0 

ii 

a  7  c 

8.3 

9.3 

871 

R<b 

>10 

4 

15.7 

ii 

a  6  c 

7.1 

(10) 

874 

R<b 

>10 

7 

15.6 

in 

a  7  c 

8.3 

u 

877 

R<b 

>10 

8 

15.3 

ii 

a  6  c 

7.1 

(i 

878 

R<b 

>10 

12 

14.1 

ID 

a  8  c 

9.5 

(i 

882 

R<b 

>10 

13 

15.2 

ID 

a  7  c 

8.3 

Ii 

883 

R<b 

.  >10 

15 

14.7 

ID 

a  8c 

9.5 

It 

885 

R<b 

>IQ 

31 

14.6 

in 

a  9  c 

10.7 

11.0 

901 

b  6c 

11.2 

1 

14.0 

in 

a8  c 

9.5 

10.3 

902 

b5c 

11.1 

7 

14.9 

i 

a  6  e 

9.6 

11.1 

908 

c  3  d 

12.5 

8 

14.5 

in 

a  6  e 

9.6 

(11.2) 

909 

c4d? 

(12.7) 

11 

15.0 

ID 

a  6  e 

9.6 

11.0 

912 

c2d 

12.3 

14 

15.2 

ID 

a  6  e 

9.6 

11.1 

915 

c3  d 

12.5 

15 

14.8 

ID 

a  7  e 

11.2 

12.0 

916 

c4d 

12.7 

16 

15.0 

ii-ni 

a  7  e 

11.2 

12.0 

917 

c4d 

12.7 

18 

15.2 

HID 

c5  d 

12.9 

12.9 

919 

19 

14.7 

I  DD 

c5d 

12.9 

12.9 

920 

23 

15.2 

ID 

c5d 

12.9 

12.9 

924 

24 

•  14.8 

i 

c5d 

12.9 

13.0 

925 

c3  e 

13.1 

26 

14.7 

ii 

c6d 

13.2 

13.4 

927 

c  4  e 

13.5 

27 

15.1 

in 

c6  d 

13.2 

13.2 

928 

28 

14.5 

i 

c7d 

13.4 

13.7 

929 

c.5  e 

14.0 

29 

14.5 

ii 

c6  d? 

13.2 

(13.2) 

930 

Clouds 


e  invis. 


e  in  vis. 


42 


3825 


Ursse  Maioris 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

83  May         5 

h 

15.0 

I 

cSd 

13.6 

14.2 

08  936 

c  7  e 

14.8 

7 

15.6 

11 

c  8  e 

15.2 

15.2 

938 

R<d 

>  14 

10 

15.1 

I 

c  9  e  R  <  d  !  ! 

15.6 

15.6 

941 

11 

15.8 

nj 

c  10  e? 

16.0 

16.0 

942 

19 

R&e  barely  vis. 

(16.0) 

950 

27 

16.0 

i 

c  15  e 

18.1 

18.1 

958 

R<eby0.5(e  —  c) 

28- 

15.4 

i 

c  15  e 

18.1 

18.1 

08  959 

U                  a 

July       24 

.15.6 

ii 

R  in  vis. 

>16 

09  016 

e  seen. 

Aug.      22 

15.5 

i 

-         11            U 

u 

045 

u 

Sept.        2  . 

15.0 

i 

u         u 

U 

056 

u 

30 

14.0 

i 

d  7  b 

14.1 

14.1 

084 

Near  hor. 

Oct.        29 

16.3 

i 

a  8  b 

8.2 

8.2 

113 

Nov.        1 

15.7 

i 

a  8  b 

8.2 

8.2 

116 

3 

15.7 

i 

a  7  b 

7.1 

7.1 

118 

6 

15.2 

i  ^) 

f  6  b 

7.0 

7.0 

121 

7 

14.8 

ID 

f  6  b 

7.0 

7.0 

122 

18 

15.0 

ii 

f  6  b 

7.0 

6.4 

133 

f  4  b  ?  (Z) 

(5.3) 

26 

15.2 

i 

f  5  b 

6.2 

6.2 

141 

f5b(Z) 

6.2 

27 

15.0 

in 

f4b 

5.3 

6.2 

142 

f  6  b  (Z) 

7.0 

29 

15.5 

ii 

f  5.5  b 

6.6 

6.6 

144 

f  5.5  b  (Z) 

6.6 

Dec.       21 

16.0 

in 

b2c 

10.5 

10.4 

166 

Seeing  poor 

b  1  c  (Z) 

10.3 

25 

15.7 

in 

bl  c 

10.3 

10.3 

170 

b  0.5  c  (Z) 

10.2 

.     28 

16.4 

ii 

b3c 

10.7 

10.7 

173 

b  3  c  (Z) 

10.7 

84  Jan.       15 

15.3 

i 

b9c 

11.7 

11.5 

191 

b  6  c  (Z) 

11.2 

17 

16.2 

i 

b  4c 

10.9 

11.1 

193 

b  6  c  (Z) 

11.2 

19 

15.3 

ii 

b8  c 

11.6 

11.4 

195 

b  6  c  (Z) 

11.2 

20 

14.5 

ii 

b  7  c 

11,4 

11.3 

196 

b  6  c  (Z) 

11.2 

21 

15.0 

u 

b  7  c 

11.4 

11.4 

197 

b  7  c  (Z) 

11.4 

23 

14.4 

i 

b  7c 

11.4 

11.4 

199 

b  7  c  (Z) 

11.4 

24 

15.0 

u 

b  7  d,  R  <  c 

12.9 

12.3 

200 

b  8  c  (Z) 

11.6 

30 

14.6 

b7d 

12.9 

12.7 

206 

b6d,R<c(Z) 

12.5 

31 

15.2 

b7d 

12.9 

13.1 

207 

b  8  d  (Z) 

13.2 

Feb.       14 

15.2 

d  2e  ? 

14.4 

14.7 

221 

Seeing  poor 

d  5  e  (Z) 

15.0 

>. 

19 

15.9 

d4e 

14.8 

14.8 

226 

~  ' 

3825 


R  Urs&  Maioris 


Series  III. 


43 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

84  Mar.       23 

h 

15.3 

R  <  e 

>16 

09  259 

R  <  e  (Z) 

May       15 

R  invis. 

>16 

312 

June      14 

«         a 

M 

342 

July       10 

16.2 

glimpse  of  R? 

u 

368 

Aug.      23 

15.2 

f5b 

6.2 

6.2 

412 

f  5  b  (Z) 

6.2 

Sept.      10 

16.3 

f4b 

5.3 

5.3 

430 

20 

15.3 

f6b 

7.0 

7.0 

440 

Oct.        13 

15.2 

f8  b 

8.6 

8.6 

463 

19 

15.3 

f8b 

8.6 

8.6 

469 

Nov.        8 

16.5 

b2c 

10.5 

10.5 

489 

18 

15.8 

b4c 

10.9 

11.1 

499 

b3d 

11.3 

85  Jan.          6 

14.8 

III 

R  barel}7"  vis. 

>16 

548 

Mar.       18 

16.2 

II 

R  invis. 

a 

619 

Apr.       11 

15.5 

I 

R  invis. 

« 

643 

5157  S  Bootis  SERIES  III. 

(1900)  14h  19m  32s     (+  28.01);     +  54°  15'.9     (— 0'.27) 

Period:  268d.2  +  ;        Variation:  8M— 13M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

k 

2 

+  54°1668 

0.0 

8.1 

P 

3 

+53°1714 

2.6 

8.2 

g 

4 

+54°1679 

5.5 

8.5 

r 

7 

1677 

12.0 

9.3 

e 

8 

1676 

15.3 

9.5 

c 

9 

1663 

16.5 

9.5 

a 

14 

1674 

21.3 

9.9 

d 

12 

1672 

22.8 

9.8 

m 

15 

+54°1670 

24.3 

10.1 

44 


5157 


S  Bootis 


Series  III. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Mar.       26 

15.5 

I 

g  4  c 

9.9 

9.9 

09  262 

Apr.       22 

15.5 

III 

g2c 

7.7 

7.2 

289     Hazy 

k  4  c  (Z) 

6.6 

May       16 

15.5 

III 

S  invis. 

>24 

313 

m  and  a  seen 

30 

n  ]) 

a         u 

t< 

327 

June      18 

ill 

U            li 

u 

346 

July       10 

Hi])]) 

U            K 

u 

368 

Aug.       21 

15.1 

I 

n        u 

u 

410 

Oct.        13 

15.1 

II 

g8a 

18.1 

20.3 

463 

g.  9  m 

22.4 

19 

15.2 

I 

g5a 

13.4 

15.1 

469 

Near  lior. 

g  6  in 

16.8 

85  Apr.       10 

16.0 

II 

S  invis. 

>24 

642 

May         3 

16.1 

III 

K 

u 

665 

12 

16.0 

I 

n 

" 

674 

m  &  a  seen 

June        8 

16.5 

I 

a  5  m 

22.8 

22.8 

701 

16 

17.1 

I 

a  4  m 

22.5 

22.5 

709 

July         1 

16.0 

I 

a  1  m 

21.6 

21.6 

724 

13 

15.8 

I 

g9c 

15.4 

16.8 

736 

g8a 

18.1 

31 

15.7 

T 

g  7  a 

16.6 

15.9 

754 

g6  in 

16.8 

„ 

g8c 

14.3 

Aug.        6 

15.4 

I 

g4a 

11.8 

11.1 

760 

g5e 

10.4 

28 

15.3 

1} 

g  4  c 

9.9 

9.2 

782 

g3e 

8.4 

30 

15.1 

I 

g4c 

9.9 

9.2 

784 

g3e 

8.4 

Sept.        1 

14.7 

I 

g6c! 

12.1 

10.8 

786 

g4e  ! 

9.4 

13 

15.0 

[ 

g7a 

16.6 

15.5 

798 

g8c 

14.3 

Oct.          5 

15.1 

I 

g9a 

19.7 

18.8 

820 

c3  a 

17.9 

86  Jan.       31 

15.5      . 

III 

S  invis. 

>24 

938 

a  well  seen 

Feb.       23 

15.8 

I 

c  6  in 

21.2 

20.3 

961 

c  6  a 

19.4 

Mar.         2 

16.2 

I 

g8c 

14.3 

15.5 

968 

g?a 

16.6 

5 

15.4 

I 

•g8.c 

14.3 

15.5 

971 

g7a 

16.6 

21 

15.3 

II])]) 

g6a 

15.0 

14.1 

987 

g7c 

13.2 

25 

15.5 

I 

g7a 

16.6 

15.5 

991 

g8c 

14.3 

5157 


S  Bootis 


Series  III. 


1800  -f 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

86  Apr.         1 

b 

15.5 

I 

g5  a 

13.4 

12.3 

09  998 

g6c 

12.1 

g(>e 

11.4 

4 

15.4 

I 

g3a 

10.2 

10.1 

10  001 

g4c 

9.9 

7 

16.0 

I 

g  2  a 

8.7 

8.1 

004 

g  2e 

7.5 

19 

15.7 

HDD 

SOg 

5.5 

5.5 

016 

27 

15.4 

ii 

k9g 

5.0 

5.0 

024 

Eye  tired. 

p  8  "• 

4.9 

May         1 

15.4 

i 

k8g 

4.4 

4.5 

028 

i 

P  7  g 

4.6 

6 

16.1 

i 

k2g 

1.1 

1.2 

,033 

k  5  p 

1.3 

15 

15.7 

DD 

k2g 

1.1 

1.0 

042 

k  3p 

0.8 

18 

15.5 

DD            k2g 

1.1 

1.1 

045 

22 

16.0 

11               k  1.5  g 

0.8 

0.8 

049 

June        2 

17.9 

I 

k9g 

5.0 

5.0 

060 

5 

17.3 

I 

klOg 

5.5 

5.5 

063 

23 

16.3 

II 

g7a 

16.6 

16.8 

081 

k  8  a 

17.0 

July         1 

16.4 

III 

g9a 

19.7 

17.6 

089 

g  9  c 

15.4 

METHOD  BY  STEPS 


12 

15.6 

I 

g  3  S  8  c 

8.5 

8.5 

9.0 

315 

k  10  S 

10.0 

24 

15.6 

I 

g  5  S  7  c 

10.0 

10.1 

10.5 

327 

S  10  a 

-11.3 

27 

16.3 

HID 

g  5  S  4  c 

11.5 

11.6 

11.6 

330 

13 

15.3 

III 

g8  S  5a 

14.9 

15.2 

16.6 

344 

c3S5a 

17.9 

18.3 

17 

15.1 

I 

c  1  S  4  a 

17.4 

17.5 

17.5 

348 

24 

16.0 

I 

c2S3a 

18.4 

18.4 

18.4 

355 

18 

16.3 

II 

aSS 

24.3 

25.3 

380 

m  2  s 

26.3 

6 

15.1 

II 

c  1  S  2a 

18.4 

18.1 

18.3 

521 

13 

14.3 

I 

c  1  S2a! 

18.4 

18.1 

18.3 

528 

18 

14.9 

I 

r  2  S  2  a 

16.7 

16.7 

16.3 

533 

S  1  c 

15.5 

11 

15.7 

I 

g  3S4r 

8.3 

8.3 

8.3 

556 

18 

34.3 

II 

k  4S4r 

6.0 

6.0 

6.5 

563 

grS 

7.5 

11 

14.7 

I 

g  1  S  2r 

6.8 

6.6 

5.8 

587 

k4S 

4.0 

17 

14.8 

I 

k4S4r 

6.0 

6.0 

5.8 

593 

SOg 

5.5 

11 

15.5 

r  2  S  2  a 

16.7 

16.7 

16.7 

648 

17 

15.3 

S<a 

>20 

654 

Near  bor. 


46 


5157 


S  Bootis 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

88  Feb.         7 

h 

16.0 

S  barely  vis. 

>24 

10  675 

Mar.        6 

15.5 

S  invis. 

" 

703 

Apr.         5 

15.8 

«         u 

" 

733 

May       28 

15.9 

a  2  S  3  m 

22.3 

22.5 

22.4 

786 

June        2 

15.3 

e  4S  2a 

19.3 

19.3 

19.7 

791 

S  2d 

20.8 

S5  m 

19.3 

29 

15.2 

g4S4a 

13.4 

13.4 

12.3 

818 

'S  2r 

10.0 

July       11 

16.0 

g3S4r 

8.3 

8.3 

8.3 

830 

29 

16.2 

g  2  S  8  r 

5.8 

6.8 

6.3 

848 

Seeing  poor 

Aug.        7 

15.2 

g  1  S  9  r 

4.8 

6.2 

5.3 

857 

k5S 

5.0 

12 

15.3 

g3S9  r 

6.8 

7.5 

7.2 

862 

24 

15.0 

g  6  S  4  r 

9.8 

9.4 

9.6 

874 

29 

15.8 

g7S3r 

10.8 

10.1 

10.5 

879 

Sept.        6 

14.8 

g8  S  2  r 

11.8 

10.7 

11.3 

887 

Oct.          7 

15.5 

a3SOd 

23.6 

24.3 

24.0 

918 

Near  hor. 

5484  U  Coronae  SERIES  IV- 

(1900)  15"  14m  7s     (+2.S45);     +32°  0'.8     (— 0'.22) 

Period  :  3d  10h  51m  12.84-;     Variation :  7*5  —  8*9. 
Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

Ill  2 

+  31°2724 

0.0 

7.6 

h 

— 

+32°2575 

(8.2) 

(8.1)  BD. 

g 

4 

-4-  32°2578 

8.4 

•   8.1 

b 

5 

+  32°2577 

(11.0) 

8.4 

i 

— 

+32°2573 

11.2 

(8.9)  BD. 

c 

6 

-f32°2572 

16.2 

8.6 

d 

10 

(22.9) 

9.8 

Notes  : 

This  variable  is  on  the  Chart  for  S  Coronas  (5504,  Series  III),  and  the  numbers  in  the  2d  and  5th  column: 
refer  to  the  Catalogue  of  the  same  variable.  The  steps  in  parentheses  could  not  be  determined  with  accuracy 
That  of  the  comparison  star  d,  which  occurs  only  once,  is  taken  from  the  scale  for  S  Coronas. 

The  observations,  like  all  those  of  the  Algol  type  variables,  are  not  systematically  arranged  for  the  determina 
tion  of  the  minima. 


5484 


U  Coronss 


Series  IV. 


47 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

.  II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


June      28 

16h   Om 

II 

a  8  c 

13.0 

11.4 

09  356 

a  6  c  (Z) 

9.7 

July       12 

15  10 

II 

a  10  c 

10.2 

14.6 

370 

a  8  c  (Z) 

13.0 

18 

15  32 

III 

a  4  c 

6.5 

7.3 

376 

a  5  c  (Z) 

8.1 

20 

15  32 

II 

a  4  c 

6.5 

6.5 

378 

a  4  c  (Z) 

6.5 

Aug.      21 

15  20 

I 

a  5  c 

8.1 

7.3 

410 

a  4  c  (Z) 

6.5 

Sept.        9 

14  43 

I 

-a  3  c 

4.9 

5.4 

429 

a  7g 

5.9 

19 

15  15 

II 

eld 

16.9 

16.9 

439 

Oct.         9 

14  20 

II 

a  2  c 

3.2 

4.6 

459 

a  7g 

5.9 

Apr.       10 

16  13 

II 

a  4  c 

6.5 

5.8 

642 

a  6  g 

5.0 

May         3 

16  47 

III 

a  4  c 

6.5 

6.6 

665 

a6  b 

6.6 

12 

16  17 

I 

a  4  c 

6.5 

7.6 

674 

gib 

8.7 

June        4 

16  47 

I 

a  4  c 

6.5 

6.2 

697 

a7g 

5.9 

16 

15  52 

I 

a  5  c 

8.1 

8.4 

709 

gib 

8.7 

July         1  • 

16  20 

I 

a  4  c 

6.5 

7.9 

724 

g  1  c 

9.2 

13 

16  15 

I 

a  6  c 

9.7 

9.7 

736 

31 

16     0 

I 

a  3  c 

4.9 

4.9 

754 

Aug.        6 

15  42 

I 

b  9c 

15.7 

15.7 

760 

30 

15  28 

I 

a  6  b 

6.6 

5.8 

784 

a  3  c 

4.9 

Oct.         5 

14  42 

I 

a  4  c 

6.5 

7.3 

820 

a  7b 

7.7 

X 

a  9g 

7.6 

Mar.         9 

15  42 

I 

a  4  c 

6.5 

6.0 

971 

a  5  b 

5.5 

22 

14  32 

I 

a  8  c 

13.0 

12.3 

988 

g4c 

11.5 

M 

14  39 

u 

a  7  c 

11.3 

11.3 

" 

U 

14  45 

11 

a  7  c 

11.3 

11.4 

" 

b  1  c 

11.5 

u 

14  52 

u 

a  7  c 

11.3 

11.1 

" 

glOb 

11.0 

g4c 

11.5 

g.9b 

10.7 

|h  before  Eph.  Min. 


lh  before  Eph.  Min. 


2h  before  Eph.  Min. 


Near  hor. 

Eph.  Hel.  Min.  14"  27" 


48 


5484 


U  Corontc 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  Mar.       22 

15"    Om 

I 

a  7  c 

11.3 

11.1 

09  988 

g8b 

10.5 

g-4c 

11.5 

15     9 

M 

a  6c 

9.7 

10.1 

ri 

g6b 

10.0 

g3c 

10.7 

15  20 

u 

a  6  c 

9.7 

9.9 

a 

g6b 

10.0 

Apr.         1 

15  44 

I 

a  7c 

11.3 

11.3 

09  998 

5 

14  50 

III 

a  4  c 

6.5 

6.6 

10  002 

aSg 

6.7 

22 

15  30 

III 

a  6.5  c 

10.5 

10.6 

019 

^h  before  Eph.  Min. 

h  3c 

10.6 

May         6 

14  53 

III 

a6c 

9.7 

8.7 

033 

a9g 

7.6 

15  34 

a 

a8g 

6.7 

8.2 

ik 

a  6  c 

9.7 

June      30 

15  37 

II-III 

a  8  c 

13.0 

12.6 

088 

i2c 

12.2 

METHOD  BY  STEPS: 


87  May       24 

15  42 

ilU 

12.2 

12.2 

416 

15  52 

i  1  U  3  c 

12.7 

12.4 

12.6 

" 

16  15 

i  1  U3c 

12.7 

12.4 

12.6 

it 

16  29 

i  2  U  2  c 

13.7 

13.7 

13.7 

.  tt 

17     9 

i  1  U3c 

12.7 

12.4 

12.6 

n 

July         9 

15     0 

II 

U3i 

8.2 

8.2 

462 

15 

15  12 

I 

U3i 

8.2 

8.2 

468 

Sept.      15 

14  44 

I 

i  1  U3c 

12.7 

12.4 

12.6 

530 

14  57 

" 

i  2U3c 

13.2 

13.2 

13.2 

tt 

15     4 

tt 

g  2  U  0  i 

10.8 

10.8 

it 

15  13 

it 

g  2  U  1  i 

10.3 

10.3 

10.3 

a 

15  24 

a 

g  2  U  1  i 

10.3 

10.3 

10.3 

tt 

15  36 

g  1  U  2i 

9.3 

9.3 

9.3 

tt 

88  Sept.        8 

15     6 

I 

i  2U3c 

13.2 

13.2 

13.2 

889 

15  14 

it 

i  3  U3c 

13.7 

13.7 

13.7 

it 

15  25 

" 

i  3  U  3  c 

13.7 

13.7 

13.7 

tt 

15  37 

u 

i  2  U  3  c 

13.2 

13.2 

13.2 

u 

15  44 

it 

i  2U4c 

12.7 

12.9 

12.8 

tt 

15  56 

It 

i  1  U  5  c 

11.7 

12.0 

11.9 

11 

16     0 

tt 

iOU 

11.2 

11.2 

It 

Eph.  Hel.  Min.  16"  21™ 


Eph.  Hel.  Min.  14"  32m 


Eph.  Hel.  Min.  15h  21* 


5501  S  Serpentis  SERIES  II. 

(1900)  15h  16m  59s  (+28.81);     +  14°  40'.4    (— 0'.22) 

Period:  365?4;        Variation:  8M— 12J« 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

b 

1 

+  15°2845 

0.0 

8.0 

a 

2 

14°2866 

8.5 

8.3 

c 

3 

14°2868 

11.2 

8.6 

e 

4 

15°2846 

15.0 

9.0 

d 

5 

14°2862 

19.0 

9.3 

f 

6 

+  15°2848 

20.4 

9.5 

g 

8 

24.0 

9.9 

Notes  : 

The  comparison  star  /,  which  was  not  used  with  the  method  by  steps,  was  inserted  in  the  above  scale  by 
means  of  observations  made  later  for  the  Atlas. 


(49) 


5501 


S  Serpentis 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000 

Remarks 

DECIMAL  METHOD: 

h 

84  Apr.       24 

16.1 

I 

a2d 

10.6 

11.7 

09  291 

a  4  d  (Z) 

12.7 

May       16 

16.0 

III 

d  1  f  • 

19.1 

19.1 

313 

dOf(Z) 

19.0 

26 

16.6 

I 

d  2f 

19.3 

19.3 

323 

Misty 

d2  f(Z) 

19.3 

June      12 

15.5 

I 

d8g 

23.0 

23.0 

340 

d  8  5  (Z) 

23.0 

26 

16.3 

1 

d!2g  •' 

25.0 

25.5 

354 

i.e.,S<gby0.2(g  —  d 

d  14  g  (Z) 

26.0 

July       15 

16.2 

I 

S<g 

^24 

373 

20 

14.9 

II 

S<g 

>24 

378 

Aug.      22 

15.3 

I 

S  just  vis. 

u 

411 

Sept.      17 

S  invis. 

u 

437 

85  Apr.       11 

15.8 

I 

a  7  d 

15.9 

14.4 

643 

c  2  d 

12.8 

May         3 

17.0 

III 

a  9  d 

18.0 

16.6 

665 

c5d 

15.1 



12 

16.5 

I 

d  2g 

20.0 

20.0 

674 

June        4 

16.5 

I 

d  10  g 

24.0 

24.0 

697 

S<g? 

16 

15.2 

I 

S  <d 

>24 

709 

July         1 

16.5 

I 

u 

u 

724 

13 

15.9 

I 

u 

" 

736 

31 

16.3 

I 

it 

u 

754 

Aug.        6 

15.5 

I 

S  <  g  &  d 

u 

760 

S  well  seen 

30 

I 

S  invis. 

ci 

784 

Near  hor. 

86  Apr.         1 

15.8 

I 

a3d 

11.7 

12.5 

998 

b7d 

13.3 

2 

15.5 

I 

a  3  d 

11.7 

12.0 

09  999 

b7d 

13.3 

a  4  e 

11.1 

27 

15.5 

II 

a4d 

12.7 

11.3 

10  024 

Eye  tired. 

a  5  c 

9.9 

May         1 

15.6 

I 

a4d 

12.7 

11.9 

028 

a  6e 

12.4 

a  8  c 

10.7 

6 

16.5 

III 

a7d 

15.9 

15.9 

033 

Clearing. 

18 

15.6 

DDD 

a7d 

15.9 

15.9 

045 

Independ.  of  prec. 

22 

16.1 

II 

a7d 

15.9 

15.9 

049 

June        2 

16.7 

I 

a  7.5  d 

16.4 

16.4 

060 

17 

15.2 

1  3)3) 

S  =  d 

19.0 

19.0 

075 

29 

15.6 

ill 

d5g! 

21.5 

21.5 

087 

July        4 

15.6 

I 

d4g 

21.0 

21.8 

092 

d7g 

22.5 

5501 


S  Serpent-is 


Series  II. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

.11 

Mean 

2400000+ 

Remarks 

87  Mar. 
Apr. 
May 

June 


July 

88  Apr. 
May 
June 

July 


24 
29 
15 
20 
14 
17 
23 
9 


5 
11 

28 


29 
11 
29 


METHOD  BY  STEPS: 


16.5 
15.7 
15.8 
15.5 
15.9 
16.6 
15.5 
15.5 


15.6 
15.4 
15.5 

15.5 

15.2 
16.1 
16.3 


I 

III 

I 

III 

I 

I 

I 

II 


III 

I 

I 

I 

I 
I 
III 


a  2 
c2 
e  1 
e2 
d  2 
d  4 


Sic 
S2e 
S  1  d 
SOd 
S2g 
S2g 

=  p-l! 


b3S4a 
b4S6a 
a5S5d 
e  2  S  5  d 
a  4  S  4  d 
e  1  S  4  d 
d  2S3g 
d  5  S  3  g 


10.4 
13.1 
17.0 
18..  0 
21.5 
22.5 
24.0 
26.0 


3.8 
3.3 
13.8 
15.5 
13.8 
15.5 
21.0 
22.5 
26.0 


10.3 

10.4 

13.1 

13.1 

17.0 

17.0 

18.0 

21.5 

21.5 

22.3 

22.4 

24.0 

26.0 

3.6 

3.7 

3.4 

3.4 

13.8 

14.8 

16.1 

13.8 

14.7 

15.8 

21.0 

21.0 

22.1 

22.3 

26.0 

10  355 

391 

407 

412 

437 

440 

446 

462 

,733 

740 

786 

791 

c2  d 

818 

830 

*)  . 

848 

Seeing  poor. 

*)  The  journal  has  a  5  S  3  g;  but  it  is  evident  from  the  scale  of  the  comparison  stars,  that  a  would  never  b 
combined  with  g  as  long  as  d  was  available. 


5504  S  Coronae  SERIES  III. 

(1900)  15h  17m  19s     (+28.45) ;     +31°  43'.6     (— 0'.22) 

Period:  360d.8;     Variation:  7M— 12M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

f 

+  33°2574 

0.0 

(6.8)  BD. 

a 

2 

31°2724 

2.0 

7.6 

g 

4 

32°2578 

7.1 

8.1 

h 

— 

32°2575 

9.0 

(8.1)  BD. 

b 

5 

32°2577 

11.1 

8.4 

c 

6 

-h32°2572 

16.1 

8.6 

d 

10 

22.9 

9.8 

52 


5504 


S  Coronse 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  June      28 

15.9 

II 

a  7b 

8.7 

9.0 

09  356 

a  8  b  (Z) 

9.3 

July       12 

15.3 

II 

a  8  b 

9.3 

9.8 

370 

a  9  b  (Z) 

• 

10.2 

18 

15.6 

III 

b3c 

12.6 

13.  (5 

376 

b  7  c  (Z) 

14.6 

20 

15.4 

II 

b3c 

12.6 

13.4 

378 

b  6  c  (Z) 

14.1 

Aug.      21 

15.4 

I 

c3  d 

18.1 

19.1 

410 

c  6  d  (Z) 

20.1 

Sept.        9 

14.8 

I 

c8d 

21.5 

21.5 

429 

19 

15.0 

II 

c9d 

22.2 

22.2 

439 

Oct.         9 

14.5 

II 

S<d 

>23 

459 

85  Apr.       10 

16.3 

II 

a  Sb 

9.3 

8.2 

642 

a  10  g 

7.1 

May         3 

16.8 

III 

a  2  c 

4.8 

4.7 

665 

a  3  b 

4.7 

a  5g 

4.6 

12 

16.2 

I 

a  6  b 

7.5 

6.8 

674 

a8g 

6.1 

June        4 

16.7 

I 

g2b 

7.9 

7.9 

697 

16 

15.9 

I 

g7b 

9.9 

10.9 

709 

g3d 

11.8 

July         1 

16.3 

I 

bl  d 

12.3 

12.7 

724 

b  4c 

13.1 

13 

16.1 

I 

b4d 

15.8 

15.8 

736 

31 

16.0 

I 

b8d 

20.5 

20.5 

754 

Aug.        6 

15.7 

I 

b7d 

19.4 

19.4 

760 

30 

15.5 

I 

c8d 

21.5 

21.5 

784 

Oct.         5 

14.9 

I 

S  invis. 

>23 

820 

86  Mar.         9 

15.7 

I 

S<d 

>23 

971 

Slightly. 

22 

14.6 

I 

b6d 

18.2 

18.2 

988 

g7d 

18.2 

A  pr.         1 

15.7 

I 

g5b 

9.1 

9.1 

09  998 

S  =  h 

9.0 

4 

15.6 

I 

a  7  b 

8.4 

7.5 

10  001 

a9g 

6.6 

5 

14.9 

III 

a7b 

8.4 

7.5 

002 

a9g 

6.6 

22 

15.6 

III 

a  7  b 

8.4 

8.6 

019 

g4b 

8.7 

May         6 

15.0 

III 

a3g 

3.5 

3.7 

033 

a2b 

3.8 

27 

15.3 

I 

a  3.5  g 

3.8 

4.3 

054 

Eye  tired. 

a3  b 

4.7 

June        2 

16.8 

I 

a6g 

5.1 

5.9 

060 

a  5  b 

6.6 

S  Coronte 


Series  III. 


53 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

.11 

Mean 

2400000+ 

Remarks 

86  June       17 

h 

15.4 

II])]) 

a7g 

5.6 

6.6 

10  075 

a  6  b 

7.5 

29 

15.7 

III 

g  4b 

8.7 

9.1 

087 

Misty. 

gl.Sd 

9.5 

July         4 

15.8 

I 

g8b 

10.3 

11.9 

092 

g4d! 

13.4 

METHOD  BY  STEPS: 


Mar.       17 

15.5 

I 

a  2S  2g 

4.6 

4.6 

'.7 

348 

* 

a  2  S  5  b 

5.1 

4.6 

24 

16.1 

I 

a  2  S  3  g 

4.1 

4.0 

4.1 

355 

Apr.       20 

15.0 

I 

SOa 

2.0 

2.0 

382 

25 

16.4 

I 

al  S 

3.0 

3.0 

387 

Mav       15 

16.0 

I 

a2S3g! 

4.1 

4.0 

4.1 

407 

20 

15.7 

III 

a4S  2g! 

5.6 

5.4 

5.5 

412 

24 

15.8 

a  3  S  2  g 

5.1 

5.1 

5.1 

416 

June      14 

16.0 

I 

g  1  S  2  b 

8.6 

8.4 

•  8.5 

437 

17 

16.7 

I 

glS  2b 

8.6 

8.4 

8.5 

440 

23 

15.7 

I 

g3S  2b 

9.6 

9.5 

9.6 

446 

July         9 

•15.7 

II 

b  2  S  5  d 

15.5 

14.5 

15.0 

462 

15 

15.2 

I 

b  4  S  3  d 

17.5 

17.8 

17.5 

468 

c  1  S 

17.1 

22 

15.5 

I 

b4S4d 

17.0 

17.0 

16.7 

475 

cOS 

16.1 

Aug.        6 

15.0 

II 

c  3  S  3  d 

19.5 

19.5 

19.5 

490 

Sept.        6 

15.3 

II 

d  2  S 

24.9 

24.9 

521 

13 

14.7 

I 

Sid! 

21.9 

21.9 

528 

15 

15.6 

I 

dlS 

23.9 

23.9 

530 

Apr.        5 

15.5 

II-III 

SOa 

2.0 

2.0 

733 

11 

15.3 

I 

f  0  S  2  a 

0.0 

0.0 

739 

May       28 

15.6 

I 

a  3  S  3  g 

4.6 

4.6 

4.6 

786 

June        2 

15.6 

I 

a3S4b 

6.1 

5.9 

6.0 

791 

29 

15.4 

I 

g  1  S  2  h 

7.6 

7.7 

7.5 

818 

•  • 

S4  b 

7.1 

i 

July       11 

16.2 

I 

g2S3b 

8.6 

8.7 

8.8 

830 

SO  h 

9.0 

29 

16.4 

I 

b  4  S  2  c 

14.6 

14.4 

14.5 

848 

Aug.        7 

15.3 

I 

b6S6d 

17.0 

17.0 

17.3 

857 

c  2  S  6  d 

17.5 

17.8 

12 

15.4 

I 

c3S4d 

19.0 

19.0 

19.0 

862 

24 

15.2 

I 

c  5  S  3  d 

20.5 

20.4 

20.5 

874 

29 

15.3 

I 

c  4  S  3  d 

20.0 

20.0 

20.0 

879 

Sept.        6 

14.9 

I 

c7S3d 

21.5 

20.9 

21.2 

887 

Seeing  poor 


5770  R  Herculis  SERIES  II. 

(1900)  16"  lm  44s    (+  2".68);     +  18°  38'.4    (— OM6) 

Period  :  317.d7  ±  ;      Variation  :  8JM  —  <  13M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

f 

3 

+  18°3113 

0.0 

8.6 

e 

4 

3114 

4.0 

8.7 

c 

5 

3120 

6.0 

8.9 

d 

7 

3121 

8.7 

9.1 

a 

9 

3119 

10.9 

9.5 

g 

10 

3111 

11.5 

9.6 

k 

12 

3115 

14.5 

9.8 

b 

18 

+  18°3116 

17.5 

10.4 

Notes  : 

Comparison  star  a,  which  was  used  only  once,  has  been  inserted  from  later  observations  with  the  12-in 
refractor  at  Georgetown. 


(54) 


5770 


R  Herculis 


Series  II. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


83  July 

b 

16.4 

I 

R  invis. 

Aug. 

22 

15.0 

I 

u     u 

Sept. 

2 

15.2 

I 

it           U 

25 

14.6 

I 

It          U 

30 

14.3 

I 

R  =  b 

Oct. 

6 

14.4 

I 

a  9  b 

84  May 

16 

16.5 

III 

R  invis. 

26 

15.9 

I 

,  "      " 

30 

ID 

«      « 

June 

14 

I 

«      .< 

July 

15 

15.6 

II 

R  barely  vis. 

20 

15.2 

II 

R  =  b 

" 

R  <  b  (Z) 

Aug. 

22 

14.6 

c3d 

Sept. 

9 

15.6 

I 

c4d 

20 

14.5 

I 

c4d 

e8  d  ! 

Oct. 

9 

14.8 

II 

d4b 

85  May 

11 

15.8 

III 

R  invis. 

June 

8 

16.7 

I 

c3  b 

d  1  b 

16 

16.2 

[ 

e  4  c 

e3d 

July 

1 

16.7 

I 

f7e 

f  5  c 

13 

16.7 

I 

f  7c 

f  5  a 

31 

16.6 

I 

c  1  d 

e5  d  ? 

Aug. 

6 

15.8 

I 

dig 

c3g 

Sept. 

1 

14.9 

I 

g3b 

d6h 

86  Apr. 

30 

16.1 

I 

c8b 

•  e  9  b 

May 

18 

15.2 

I  DD 

eld 

e  1  c 

27 

15.7 

I 

R  =  e 

f  8  c 

June 

2 

17.0 

I 

e  3  c 

e2d 

17 

15.8 

II  DD 

c8  d 

e9d 

29 

16.0 

III 

d  2b 

d'5g 

c3b 

>18 

09  023 

u 

045 

It 

056 

" 

079 

17.5 

17.5 

084 

16.8 

16.5 

090 

•s^  -1  O 

^  -lO 

313 

" 

323 

" 

,327 

" 

342 

•' 

373 

18 

378 

6.8 

6.8 

411 

7.1 

7.1 

429 

7.1 

7.5 

440 

7.8 

12.2 

12.2 

459 

>18 

673 

9.5 

9.6 

701 

9.6 

4.8 

5.1 

709 

5.4 

2.8 

2.9 

724 

3.0 

4.2 

4.3 

736 

4.4 

6.3 

6.4 

754 

6.4 

9.0 

8,4 

760 

7.7 

13.3 

13.7 

09  786 

14.0 

15.2 

11.7 

10  027 

8.2 

4.5 

4.4 

045 

4.2 

4.0 

4.4 

054 

4.8 

4.6 

4.8 

060 

4.9 

8.2 

8.2 

075 

8.2 

10.5 

10.0 

087 

10,1 

9.5 

Low. 


Cloudy 


Eye  tired 


Mist 


5770 


R  Herculis 


Series  II. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

80  July         4 

h 

16.3 

I 

d6g 

10.5 

10.5 

10  092 

c8g 

10.5 

METHOD  BY  STEPS: 

87  Apr.       20 

15.3 

I 

c  2  R  1  d 

7.9 

7.8 

7.9 

382 

25 

16.6 

I 

cOR2d 

6.4 

6.4 

387 

May       18 

16.2 

I 

d  2  R  1  g 

10.6 

10.6 

10.6 

410 

24 

16.2 

g  1  R  2  k 

12.5 

12.5 

12.2 

416 

d3R 

11.7 

June      15 

15.6 

I 

bl  R 

18.5 

18.5 

438 

k4R 

18.5 

19 

I 

b2R 

19.5 

19.5 

442 

88  Apr.         5 

16.0 

II-III 

f4R  2c 

4.0 

4.0 

4.4 

733 

R3d 

5.7 

ROe 

4.0 

11 

15.6 

I 

cl  R2d 

6.9 

6.8 

7.2 

739 

e4R 

8.0 

May       28 

15.6 

I 

R  invis. 

>18 

786 

June      30 

16.3 

II 

U             il 

d 

819 

5950  W  Herculis  SERIES  III, 

(1900)  16h  31m  41s    (+2M3);     +37°  32'.4     (— OM3) 

Period:  280d.0±;     Variation:  8M— <13M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

g 

2 

+37°2774 

0.0 

8.2 

a 

4 

37°2772 

2.5 

8.4 

f 

5 

38°2801 

5.0 

8.4 

c 

9 

37°2775 

7.5 

9.0 

b 

14 

+37°2773 

8.5 

9.5 

e 

18 

12.0 

10.0 

d 

19 

16.5 

10.3 

5950 


W  Hcrculis 


Series  III. 


57 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  June      27 

15.6 

II 

a  6  c 

5.5 

5.5 

09  355 

a  6  c  (Z) 

5.5 

July         2 

15.8 

III 

a  6  c 

5.5 

5.5 

360 

a  6  e  (Z) 

5.5 

13 

15.2 

11 

a  7.5  c 

6.3 

5.7 

371 

a  5  c  (Z) 

5.0 

19 

15.2 

I 

a  5.5  c 

5.3 

5.7 

377 

a  7  c  (Z) 

6.0 

Aug.       22 

15.0 

I 

a  7  c 

6.0 

5.5 

411 

, 

a  5  c  (Z) 

5.5 

Sept.      10 

14.0 

II 

a  8c 

6.5 

7.5 

,   430 

a  10  b 

8.5 

20 

14.7 

I 

a  7  c 

6.0 

6.7 

440 

a  8  b 

7.3 

85  May        11 

16.3 

III 

W  in  vis. 

>17 

673 

Cloudy 

June        8 

I 

U                (1       '        .  . 

<( 

701 

16 

16.3 

I 

It               U 

H 

709 

July         2 

15.6 

I 

W  barelv  vis. 

u 

725 

Aug.        3 

15.3 

II 

c4b 

7.9 

7.9 

757 

9 

15.7 

I 

a  8  c 

6.5 

6.0 

763 

a5b  ! 

5.5 

Sept.        1 

15.0 

I 

a  2  c 

3.5 

3.3 

.09  786 

alb 

3.1 

86  Apr.       30 

16.3 

I 

c8  d 

14.7 

12.5 

10  027 

c  6  e 

10.2 

Mav       18 

15.3 

DD 

a7c  ! 

'6.0 

6.0 

045 

27 

15.8 

a  6  c 

5.5 

5.5 

054 

Eye  tired 

f  2c 

5.5 

June        2 

17.1 

I 

a  6  c 

5.5 

5.5 

060 

23 

15.2 

II 

g9a 

2.3 

2.3 

081 

July         1 

15.4 

III 

g2a 

0.5 

1.3 

089 

g4f 

2.0 

METHOD  BY  STEPS 


87  Apr.       20 

15.5 

I 

a  1  W  4  c 

3.5 

3.5 

3.5 

382 

29 

15.8 

III 

a  3  W  2  c 

5.5           5.5 

5.5 

391 

May       18 

16.4 

I 

b  3  W  3  e 

10.3 

10.3 

10.0 

410 

c2W 

9.5 

24 

16.3 

b  2  W  1  e 

10.8 

10.8 

10.7 

416 

c3  W 

10.5 

June      15 

15.7 

I 

d  1  W 

17.5 

16.8 

438 

e4  W 

16.0 

19 

15.7 

I 

d  1  W 

17.5 

17.5 

442 

5950 


Herculis 


Series  III. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

h 

87  Oct.        11 

15.8 

I 

e2  W2d 

14.3 

14.3 

14.3 

10  556 

18 

14.5 

II 

e  1  W  4  d 

12.8 

12.9 

12.4 

563 

b3  W 

11.5 

88  Apr.        5 
May       28 
June      30 

16.2 
15.9 
16.4 

III 

I 
II 

W  in  vis. 

U              it 

tt          « 

>17 

u 
u 

733 

786 
819 

6044  S  Herculis  SERIES  II. 

(1900)  16h  47m  21s    (+28.73);     +15°  6'.6    (— OMO) 

Period  :  308M  ;  large  irregularities ;     Variation  :  7M — 12M 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

1 

+  15°3066 

0.0 

(6.1)  BD. 

c 

5 

3070 

7.5 

8.6 

b 

6 

3060 

10.0 

8.8 

d 

13 

+  15°3062 

15.8 

9.8 

6014 


S  Herculis 


Series  II. 


59 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


83  July       25 

16.8 

II 

a  8  b? 

8.0 

8.0 

09  017 

28 

15.5 

I 

a  6  b 

6.0 

6.0 

020 

30 

15.7 

II 

a,4b 

4.0 

4.0 

022 

31 

16.1 

I 

a  5.5  b 

5.5 

5.5 

023 

Aug.        2 

14.7 

I 

a  7  b 

7.0 

7.0 

025 

3 

14.5 

I 

a  6  b 

6.0 

5.7 

026 

a  7  c 

5.3 

4 

15.1 

II 

a  5  b 

5.0 

5.2 

027 

a  7  c 

5.3 

,      5 

14.7 

a  5  b 

5.0 

4.8 

028 

a  6  c 

4.5 

:,    ! 

9 

16.0 

II 

a4b 

4.0 

4.3 

032 

a  6  c 

4.5 

20 

15.0 

II 

a3b 

3.0 

3.0 

043 

22 

14.5 

I 

a  2b 

2.0 

2.0 

045 

23 

14.9 

II 

alb 

1.0 

1.0 

046 

24 

14.6 

II 

alb 

1.0 

1.0 

047 

Sept.        2 

14.6 

I 

S=a 

0.0 

0.0 

056 

3 

14.7 

I 

S  =  a 

0.0 

0.0 

057 

4 

14.6 

I 

S  =  a 

0.0 

0.0 

058 

5 

14.6 

I 

S^a 

<0.0 

059 

25 

14.3 

11 

a  2b 

2.0 

2.0 

079 

26 

14.5 

I 

a  2.5  b 

2.5 

2.5 

080 

30 

14.1 

I 

a2b 

2.0 

2.2 

'   084 

a  3  c 

2.3 

Oct.         3 

14.1 

III 

a  3  b 

3.0 

3.0 

087 

a  4  c 

3.0 

6 

14.3 

I 

a  3  b 

3.0 

3.0 

090 

a  4  c 

3.3 

21 

14.3 

a  7  b,  S  <c 

7.0 

(7.5) 

105 

23 

14.6 

a  7  b,  S  <  c 

7.0 

(7.5) 

107 

29 

14.3 

I 

a8  b 

8.0 

8.0 

113 

Mar.         1 

13.9 

I 

a9  b 

9.0 

9.0 

116 

6 

14.4 

II  D 

S<b 

>10 

121 

84  May       16 

16.4 

III 

b  9d 

15.2 

14.7 

313 

b  7  d  (Z) 

14.1 

26 

16.1 

I 

b9d 

15.2 

15.2 

323 

b  9  d  (Z) 

15.2 

June      12 

16.3 

I 

b3d 

11.7 

12.3 

340 

b  5  d  (Z) 

12.9 

26 

16.5 

1 

c3b 

8.3 

8.3 

354 

c  3  b  (Z) 

8.3 

July       13 

15.4 

III 

a3b 

3.0 

4.5 

371 

a  6  b  (Z) 

6.0 

19 

15.3 

I 

a  4  c 

3.0 

3.4 

377 

a  5  c  (Z) 

.    3.8 

Aug.      22 

15.3 

I 

a  9  c 

6.8 

7.2 

411 

a  10  c  (Z) 

7.5 

Low 


60 


Her  en  Us 


Series  II. 


1800+ 

Gr.  M.  T.         Sky 

; 

Comparisons 

I 

i 

II 

Mean 

2400000  + 

Remarks 

h 

84  Sept.       10 

14.3 

II 

S  =  b,  S<c 

10.0 

10.0 

09  430 

20 

14.8 

I 

b5d 

12.9 

13.1 

440 

c  7  d 

13.3 

Oct.          9 

15.2 

II 

S<d 

>16 

459 

85  May       11 

16.4 

III 

a  5  b 

5.0 

4.8 

673 

Cloudy 

a  6  c 

4.5 

June        9 

15.8 

I 

a  2  b 

2.0 

2.2 

702 

•c 

a  3  c 

2.3 

17 

15.5 

I 

a  3  b 

3.0 

3.0 

710 

a  4  c 

3.0 

July         2 

15.8 

I 

a  5  b 

5.0 

5.2 

725 

a  7  c 

5.3 

13 

17.1 

I 

a  8  b 

8.0 

7.8 

736 

alOc 

7.5 

-  Aug.        3 

15.4 

II 

b4d 

12.3 

12.0 

757 

c  5  d 

11.7 

9 

15.1 

I 

b7d 

14.1 

14.1 

763 

cSd 

14.1 

Sept.        1 

15.2 

I 

S<d 

>16 

09  786 

86  Apr.       30 

16.5 

I 

a  4  c 

3.0 

3.0 

10  027 

a3b 

3.0 

May       18 

15.4 

DD 

a  10  c  ! 

7.5 

6.8 

045 

a  6  b? 

6.0 

27 

16.0 

I 

c  5  b 

8.8 

8.8 

054 

Eye  tired 

June        2 

17.2 

I 

c3b 

8.3 

8.3 

060 

23 

15.4 

II 

b8d 

14.6 

'  14.6 

081 

Julv         1 

15.6 

III 

b9d 

15.2 

15.2 

089 

METHOD  BY  STEPS: 


87  Apr.       20 

15.7 

I 

b  3  S  2  d 

13.4 

13.5 

13.5 

382 

29 

16.0 

III 

d  1  S 

16.8 

16.8 

391 

May       18 

16.5 

I 

d  2S 

17.8 

17.8 

410 

Sept,        6 

15.5 

II 

S  invis. 

>16 

521 

88  Apr.         5 

16.4 

III 

S  invis. 

>16 

733 

May       28 

15.9 

I 

M 

<( 

786 

June      30 

16.5 

II 

u 

it 

819 

6512  T  Herculis  SERIES  III. 

(1900)   18h5m  19s    (-h2*.27);     +  31°  0'.2     (+0'.01) 

Period  :  164d,8o  ±  ;     Variation  :  8M— 11 JM. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

g 

3 

+  30°3138 

0.0 

7.5 

e 

4 

+30°3133 

4.0 

7.9 

a 

6 

+30°3142 

8.0 

8.1 

f 

14 

+30°3139 

16.0 

9.1 

b 

22 

+30°3136  • 

19.7 

9.6 

d 

29 

+  31°318o 

23.8 

10.1 

c 

31 

430°3135 

27.8 

10.2 

(01) 


62 


6512 


T  Hercnlis 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

DECIMAL  METHOD: 


83  July 

25 

h 

15.2 

II 

a6.5b 

28 

16.1 

I 

a5.5b 

30 

15.2 

II 

a  7  b 

31 

16.8 

I 

a  7b 

Aug. 

2 

15.1 

I 

a8b 

3 

14.7 

I 

a8  b 

4 

15.7 

II    . 

a8  b 

5 

15.2 

9 

a9b 

9 

15.9 

II 

aSb 

24 

14.6 

II 

T  =  c 

Sept. 

30 

15.2 

I 

b6c 

Oct. 

6 

15.5 

I 

T<c      „ 

29 

14.9 

I 

T  in  vis. 

84  May 

29 

16.2 

I 

e  4  a 

e  6  a  (Z) 

June 

12 

15.9 

I 

a  2  b 

a  4  b  (Z) 

28 

15.3 

II 

a7  f 

a  6  f  (Z) 

July 

13 

15.6 

d  8c 

d  4  c  (Z) 

19 

15.5 

I 

T<c 

Aug. 

22 

15.5 

I 

T  just.  vis. 

Sept. 

17 

a        a 

Oct. 

9 

15.4 

II 

a3f 

e5f 

16 

14.6 

III 

a2f 

e3f 

Nov. 

7 

14.6 

I 

g6e 

g4a 

14 

14.3 

I 

g7e 

g5  a 

85  June 

9 

16.3 

I 

b8d 

b9c 

17 

15.7 

I 

T<d 

July 

2 

15.9 

I 

T<d 

Aug. 

9 

15.5 

I 

T  invis. 

Sept. 

1 

15.3 

I 

b8d 

13 

14.9 

I 

a9f 

a8b 

Oct. 

8 

15.4 

I 

e8a? 

9 

15.7 

I 

e  4  a  ! 

13 

15.4 

I 

T  =  a  ! 

15 

15.3 

I 

a  1  f 

86  May 

18 

15.8 

DDD 

T  invis. 

27 

16.3 

1 

T<c 

15.6 

09  017 

14.4 

020 

16.2 

022 

16.2 

023 

17.4 

025 

17.4 

026 

17.4 

027 

18.5 

028 

17.4 

032 

27  .-8 

047 

24.6 

084 

d  invis. 

>28 

090 

113 

5.6 

6.0 

326 

6.4 

10.3 

11.5 

340 

12.7 

13.6 

13.2 

356 

12.8 

27.0 

26.2 

371 

25.4 

>28 

377 

" 

411 

u 

437 

10.4 

10.2 

459 

10.0 

9.6 

8.6 

466 

7.6 

2.4 

2.8 

488 

3.2 

2.8 

3.4 

495 

4.0 

23.0 

25.0 

702 

27.0 

>24 

710 

a 

725 

R 

763 

* 

23.0 

23.0 

786 

15.2 

16.3 

798 

17.4 

7.2 

7.2 

823 

Eye  tired 

5.6 

5.6 

824 

8.0 

8.0 

828 

8.8 

8.8 

09  830 

>28 

10  045 

d  invis.  ! 

054 

T  just  vis 

Eye  tired 


6512 


T  Herculis 


Series  III. 


63 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  June        2 

u 
17.3 

I 

T  <  d 

>28 

10  060 

23 

15.5 

II 

T  barely  vis. 

u 

081 

July         1 

15.7 

III 

T  invis. 

tt 

089 

METHOD  BY  STEPS: 


Apr.       20 

15.8 

I 

T<d 

>24 

r   382 

Mav       18 

16.6 

I 

T<d 

ti 

410 

June       21 

15.7 

I 

b  3  T  0  c 

25.2 

24.0 

444 

Tl  d 

22.8 

July       10 

15.5 

I 

a  3  T  5  d 

11.0 

11.0 

11.0 

463 

15 

15.5 

I 

a  1  T  5  f 

10.0 

9.3 

9.3 

468 

e  3  T  5  f 

9.0 

8.5 

22 

15.6 

I 

e  2  T  2  a 

6.0 

6.0 

6.0 

475 

Aug.        6 

15.1 

II 

g  3  T  1  e 

3.0 

3.0 

3.8 

490 

g  3  T  2  a 

4.5 

4.8 

Sept.        6 

15.8 

II 

f  2  T  2  b 

17.8 

17.8 

18.9 

521 

f  2  T  2  d 

19.9 

19.9 

13 

14.9 

I 

f  2  T  2  b 

19.9' 

19.9 

19.0 

528 

18 

15.1 

I 

b  2  T  3  d 

21.2 

21.3 

21.3 

533 

Oct.        11 

16.1 

I 

d  2  T  1  c 

26.3 

26.5 

26.4 

556 

May       28 

16.0 

I 

b  3  T  1  d 

22.7 

22.8 

22.8 

786 

June         2 

15.7 

I 

b  3  Tl  d 

22.7 

22.8 

22.8 

791 

29 

15.7 

I 

a  3  T  5  f 

11.0 

11.0 

10.5 

818 

e  5  T  5  f 

10.0 

10.0 

July       11 

16.3 

I 

T  -  a  ! 

8.0 

8.0 

830 

29 

16.6 

I 

a  6  T  4  f 

13.0 

12.8 

12.9 

848 

Aug.        7 

15.4 

I      . 

f  1  T  2  b 

17.3 

17.2 

17.6 

857 

f  1  T  4  d 

18.4 

17.6 

12 

15.6 

I 

d2T3c 

25.3 

25.4 

25.4 

862 

Seeing  poor. 


7045  R  Cygni  SERIES  III. 

(1900)  19h  34m  8s    (+ls.61) ;     +49°  58'.5    (+OM3) 

.Period:  425a.7  ;     Variation:  7M— <14M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps. 

Magu. 

d 

2 

+49°3059 

0.0 

(7.0)  BD. 

f 

5 

3051 

9.3 

8.6 

c 

6 

3073 

11.3 

8.8 

a 

11  . 

3072 

12.8 

9.1 

b 

14 

3065 

15.0 

9.3 

e 

31 

+49°3068 

18.0 

10.2 

7045 


R  Cijgni 


Series  III. 


18004- 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL    METHOD: 


83  Julv       31 

16.4 

I 

R  barely  vis. 

1 

>  18 

09  023 

Aug.        2 

16.7 

I 

n         n 

" 

025 

4 

16.4 

II 

a         ti 

u 

027 

22 

15.1 

I 

n         n 

it 

045 

Sept.        2. 

15.3 

I 

11                   U 

tt 

05(5 

26 

15.8 

I 

R  invis. 

u 

080 

30 

14.6 

I 

R  barely  vis. 

li 

084 

Oct.          6 

15.8 

I 

t.               il 

tl 

090 

21 

15.5 

? 

a  6  b 

14.1 

14.1 

105 

29 

15.0 

I 

cS  a 

12.5 

12.5 

113 

Nov.        1 

15.7 

I 

d  6  e 

6.8 

6.8 

116 

3 

14.6 

I 

d  4.5  c 

5.1 

5.1 

ns 

6 

14.8 

D 

d  4c 

4.5 

4.5 

121 

7 

14.4 

3) 

d  3  c 

3.4 

3.4 

122 

18 

14.4 

II 

d2.5  c 

2.8 

2.8 

133 

26 

15.0 

I 

d  2c 

2.3 

2.3 

141 

27 

14.9 

in 

d  1  c 

1.1 

2.0 

142 

d  2.5  c  (Z) 

2.8 

29 

15.2 

II 

die 

1.1 

1.7 

144 

d  2  c  (Z) 

2.3 

Dec.       21 

14.3 

ill 

die 

1.1 

1.4 

166 

d  1.5  c(Z) 

1.7 

25 

15.4 

ill 

die 

1.1 

1.1 

170 

d  1  c  (Z) 

1.1 

27 

12.9 

ill 

d  2c 

2.3 

1.7 

172 

d  1  c  (Z) 

1.1 

28 

14.7 

II 

die 

1.1 

1.7 

173 

d  2  c  (Z) 

2.3 

84  Jan.         3 

14.8 

ill 

R  invis. 

— 

179 

5 

14.4 

ID 

d  2c 

2.3 

2.3 

181 

d2c?(Z) 

2.3 

May       28 

16.0 

I 

R  invis. 

>18 

325 

June      14 

I 

u      ii 

n 

342 

July       13 

16.0 

II 

n     a 

a 

371 

Aug.      23 

15.0 

I 

a        n 

" 

412 

Sept.      17 

n        a 

" 

437 

Oct.        10 

14.5 

I 

u        u 

« 

460 

Nov.        7 

14.7 

I 

11            11 

« 

488 

Dec.         9 

14.8 

III 

n         11 

a 

520 

85  June        9 

16.1 

I 

a  10  e 

18.0 

18.0 

702 

17 

15.2 

I 

a  10  e  ? 

18.0 

18.0 

710 

July         1 

16.8 

I 

R  just  vis. 

>  18 

724 

13 

17.3 

1 

a     a       a 

a 

736 

Aug.        3 

15.8 

II 

R  invis. 

u 

757 

*)  Sky  III  will  explain  this. 


7045 


R  Oygni 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  Aug.      10 

h 

15.0 

I 

R  invis. 

>18 

09  764 

13 

15.6 

I 

u         i: 

u 

767 

14 

15.0 

I 

R  barely  vis. 

u 

768 

28 

14.6 

ID 

R  invis. 

« 

782 

Oct.        22 

14.7 

DDD 

R  just  vis.? 

u 

837 

23 

14.0 

DDD 

R  invis. 

d 

838 

26 

14.2 

in 

tt           K 

« 

841 

28 

14.4 

I 

il           « 

u 

09  843 

86  May       18 

15.9 

DDD 

d4c 

4.5 

4.2 

10  045 

V 

d  3  a 

3.8 

27 

16.3 

I 

d  3.5  c 

3.9 

3.9 

054 

d  3  a 

3.8 

June        2 

17.4 

I 

d  6c 

6.8 

6.6 

060 

Eye  tired 

d  5  a 

6.4 

23 

15.7 

n 

d  9  c 

10.2 

10.3 

081 

d  8  a 

10.2 

d  7b 

10.5 

July         1 

15.8 

HI 

d  9c 

10.2 

11.1 

089 

d8b 

12.0 

METHOD  BY  STEPS 


87  Apr.       29 

16.3 

III 

b3R 

18.0 

18.5 

e  1  R? 

19.0 

May       18 

16.7 

I 

R3a 

9.8 

10.1 

R  1  c 

10.3 

24 

16.6 

? 

R  1  f 

8.3 

9.1 

R  2  c 

9.3 

R3a 

9.8 

June      15 

16.0 

I 

d4R4f 

4.6 

4.6 

5.2 

R5c 

6.3 

19 

15.8 

I 

R4c 

7.3 

6.8 

R3f 

6.3 

July       10 

15.6 

I 

d5R3f 

5.6 

5.8 

6.2 

R4c 

7.3 

15 

15.7 

I 

d5R3f 

5.6 

5.8 

6.2 

R3c 

(8.3) 

22 

15.7 

I 

d5R3  f 

5.6 

5.8 

6.2 

R4c 

7.3 

Aug.        6 

15.2 

II 

Rl  f 

8.3 

8.8 

R  2  c 

9.3 

Sept.        6 

16.0 

II 

b  1  R  2e 

16.0 

16.0 

16.0 

15 

15.2 

I 

b  2  R  1  e 

17.0 

17.0 

17.0 

18 

15.2 

I 

b  1  R  1  e 

16.5 

16.5 

16.5 

Oct.        11 

16.2 

I 

e2R 

20.0 

20.0 

88  May       28 

16.1 

1 

a  1  R  2b 

13.4 

13.5 

13.5 

June        2 

15.8 

I 

f  1  R2a 

10.5 

10.5 

10.8 

R  1  c 

10.3 

, 

R3b 

12.0 

391 
410 
416 

438 
442 
463 
468 
475 
490 

521 
530 
533 
556 


786 
791 


66 


7045 


R  Cygni 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

88  June      30 

h 

15.8 

II 

d  1  R  9  f 

0.6 

0.9 

0.8 

10  819 

July       11 

16.3 

I 

d  3R7f 

2.7 

2.8 

2.8 

830 

29 

16.7 

I 

d  2R  ! 

2.0 

2.0 

848 

Aug.        7 

15.6 

I 

d  3  R  10  f 

1,1 

2.1 

1.6 

857 

12 

15.6 

I 

d  2R 

2.0 

2.0 

862 

24 

15.3 

I 

d4R 

4.0 

4.0 

874 

29 

15.4 

I 

d5R 

5.0 

5.0 

879 

Sept.        6 

15.0 

I 

d5R 

5.0 

5.0 

887 

Oct.         7 

15.8 

I 

fOR  2c 

9.3 

9.1 

918 

R4  a 

8.8 

7106  S  Vulpeculse  SERIES  IV. 

(1900)  19h  44m  18s  (+2'.46);     +27°  2'.3     (+OM5) 

Period:  67d.5,  Periodic  inequal. ;     Variation:  8JM— 9JM. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps. 

Magn. 

d 

+  26°3679 

0.0 

8.1  BD 

f 

27°3526 

7.0 

9.1    " 

e 

26°3672 

8.3 

9.5    " 

7106 


S  Vulpeculw 


Scries  IV. 


67 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


83  Sept. 

5 

h 

14.3 

I 

d  5e 

26 

14.7 

I 

d  7  e 

30 

15.2 

I 

d  Se 

Oct. 

3 

14.4 

III 

d  8e 

21 

15.2 

? 

d  9e 

29 

14.8 

I 

d  8  e 

Nov. 

1 

14.2 

I 

d4e 

3 

14.4 

I 

d  4e 

6 

14.4 

II]) 

d  3.5  e 

i 

7 

14.2 

II]) 

d  4e 

18 

14.1 

II 

d  4e 

d  4.5  e  (Z) 

26 

14.6 

I 

d  4.5  e 

d  4  e  (Z) 

27 

14.6 

III 

d  7e 

d  5  e  (Z) 

29 

14.9 

II 

d  7  e 

d  8  e  (Z) 

84  May 

28 

16.2 

I 

d  6  e 

d  4  e  (Z) 

June 

12 

16.1 

I 

d8  e 

d  6  e  (Z) 

26 

16.7 

1 

d  7  e 

d  7  e  (Z) 

July 

13 

15.8 

II 

d  Se 

d  8  e  (Z) 

19 

15.7 

I 

d  8e 

d  7  e  (Z) 

Aug. 

23 

15.2 

I 

d  5e 

d  6  e  (Z) 

Sept. 

10 

15.7 

I 

d  7e 

20 

15.5 

I 

d  7e 

d  9f 

Oct. 

10 

14.7 

I 

d  4e 

d  5  f 

16 

14.9 

III 

d5e 

d  6f 

Nov. 

7 

14.0 

I 

d  7e 

d  8f 

14 

14.5 

I 

d  5  e 

d  6  f 

Dec. 

9 

15.0 

III 

d  6e 

d8f 

85  June 

9 

16.7 

I 

d5e 

d  7f 

17 

16.1 

I 

d8e!! 

4.2 

4.2 

09  059 

5.8 

5.8 

080 

6.6 

6.6 

084 

6.6 

6.6 

087 

7.5 

7.5 

105 

6.6 

6.6 

113 

3.3 

3.3 

116 

3.3 

3.3 

118 

2.9 

2.9 

121 

3.3 

3.3 

122 

3.3 

3.5 

133 

3.7 

3.7 

3.5 

141 

3.3 

5.8 

5.0 

142 

4.2 

5.8 

6.2 

144 

6.6 

5.0 

4.2 

325 

3.3 

6.6 

5.8 

340 

5.0 

5.8 

5.8 

354 

5.8 

6.6 

6.6 

371 

6.6 

6.6 

6.2 

377 

5.8 

4.2 

4.6 

412 

5.0 

5.8 

5.8 

430 

5.8 

6.1 

440 

6.3 

3.3 

3.4 

460 

3.5 

4.2 

4.2 

466 

4.2 

5.8 

5.7 

488 

5.6 

4.2 

4.2 

495 

4.2 

- 

5.0 

5.3 

520 

5.6 

4.2 

4.6 

702 

4.9 

6.6 

'-•• 

6.6 

710 

Low. 


68 


7106 


S  Vulpeculsc 


Series  IV 


1800+ 

Or.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  July         2 

h 

16.3 

I 

d6e 

5.0 

5.3 

09  725 

d  8f 

5.6 

15 

15.5 

I 

d  4e 

3.3 

3.4 

738 

d5f 

3.5 

Aug.        4 

15.7 

I 

d  4e 

3.3 

3.8 

758 

d6f 

4.2 

10 

15.7 

I 

d  7e 

5.8 

5.7 

764 

d  8  f 

5.6 

13 

16.1 

I 

d  7e 

5.8 

5.7 

767 

d  8f 

5.6 

30 

15.2 

I 

d6e 

5.0 

5.0 

784 

d7f 

4.9 

Sept.        1 

15.6 

I 

d  7e 

5.8 

5.7 

786 

d  8  f 

5.6 

10 

14.7 

I 

d  3e 

2.5 

2.7 

795 

d4f 

2.8 

14 

15.6 

ID 

.   d  5e 

4.2 

4.2 

799 

d  6f 

4.2 

17 

15.1 

II]) 

d  4e 

3.3 

3.4 

802 

d  5  f 

3.5 

20 

15.1 

DD 

d  3e 

2.5 

2.7 

805 

d  4f 

2.8 

21 

15.1 

DD 

d  3e 

2.5 

2.7 

806 

d4f 

2.8 

24 

15.0 

DDD 

d3e 

2.5 

3.0 

809 

d5  f 

3.5 

25 

14.5 

i< 

d3e 

2.5 

2.7 

810 

d  4f 

2.8 

26 

15.0 

"  ill 

d  6e 

5.0 

5.0 

811 

d7  f 

4.9 

Oct.          1 

14.3 

II 

d6e 

5.0 

5.0 

816 

d  7  f 

4.9 

5 

14.4 

I 

d  4e 

3.3 

3.4 

820 

not  fainter  ! 

d  5f 

3.5 

8 

14.9 

I 

d  5e? 

4.2 

4.2 

823 

Eye  tired 

d  6f? 

4.2 

9 

15.5 

I 

d  5e 

4.2 

4.6 

824 

d  7  f 

4.9 

11 

15.7 

III 

d  5e 

4.2 

4.2 

826 

d  6f 

4.2 

13 

15.2 

I 

d4e 

3.3 

3.8 

828 

d  6  f 

4.2 

15 

15.1 

D 

d  6e? 

5.0 

5.3 

830 

Near  ]) 

d  8f? 

5.6 

16 

15.0 

D 

d  5  e  ! 

4.2 

4.2 

831 

d6f  ! 

4.2 

22 

'l4.7 

DDD 

d  6e 

5.0 

5.3 

837 

d  8f 

5.6 

23 

14.1 

a 

d6e 

5.0 

5.3 

838 

d  8  f 

5.6 

26 

14.2 

ill 

d  6e? 

5.0 

5.3 

841 

Fog 

d  8  f? 

5.6 

28 

14.4 

I 

d  6  e 

5.0 

5.3 

843 

d  8  f 

5.6 

7106 


S  Vulpeculx 


Series  IV. 


69 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

85  Oct.        29 

h 

16.2 

9 

d  6  e 

5.0 

5.3 

*    09  844 

(1  8  f 

5.6 

Nov.         4 

15.1 

II 

d8  e 

6.6 

6.5 

850 

d  Of 

6.3 

9 

15.0 

I 

d  6  e 

5.0 

5.0 

855 

d7f 

4.9 

12 

14.9 

II 

d  5e 

4.2 

4.6 

858 

d  7f 

4.9 

23 

15.0 

TO 

d  4e 

3.3 

3.8 

869 

d  6f 

4.2 

26 

15.4 

i 

d  4e 

3.3 

3.4 

09  872 

» 

d  5f 

3.5 

80  May       27 

16.4 

i 

d  6e 

5.0 

4.8 

10  054 

Eye  tired. 

d  6.5  f 

4.6 

June        2 

17.5 

i 

d  6  e 

5.0 

5.0 

060 

d  7f 

4.9 

23 

15.8 

ii 

d  4e 

3.3 

3.4 

081 

d  5f 

3.5 

July         1 

16.0 

in 

d  5e 

•4.2 

4.6 

089 

d  7f 

4.9 

METHOD  BY  STEPS: 


87  May       18 

16.8 

I 

d  4S3e 

4.6 

4.8 

4.8 

410 

S  2f 

5.0 

24 

16.8 

? 

d  3  S  2  f 

4.0 

4'.  2 

4.1 

416 

June      15 

16.2 

I 

d  4S  3  e 

4.6 

4.8 

4.8 

438 

S  2f 

5.0 

19 

15.9 

I 

d  4S3e 

4.6 

4.8 

4.8 

442 

S2f 

5.0 

Julv       10 

15.7 

I 

d  5S  2f 

5.0 

5.0 

5.0 

463 

15 

15.8 

I 

S  1  f 

6.0 

5.7 

468 

S3e 

5.3 

22 

15.8 

I 

d  4S3f 

4.0 

4.0 

4.1 

475 

S4e 

4.3 

Aug.        6 

15.3 

II 

d  5S3f 

4.5 

4.4 

4.4 

490 

S4e 

4.3 

Sept.        6 

16.1 

II 

d5S2f 

5.0 

5.0 

5.1 

521 

S  3e 

5.3 

15 

15.3 

I 

d6S2f 

5.5 

5.2 

5.4 

530 

18 

15.3 

I 

d  4S3f 

4.0 

4.0 

3.8 

533 

S5e" 

3.3 

Oct.        12 

14.7 

? 

d4S2f 

4.5 

4.6 

4.5 

557 

S4e 

4.3 

18 

14.7 

II 

d4S3f 

4.0 

4.0 

3.8 

563 

S5e 

3.3 

Nov.      11 

15.3 

I 

d5S2f 

5.0 

5.0 

4.6 

587 

d  5S5e 

4.2 

4.2 

17 

14.9 

I 

S2f 

5.0 

4.7 

593 

* 

• 

S4e 

4.3 

70 


7106 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

88  May       28 

h 

16.2 

I 

d  5S3  f 

4.5 

4.4 

4.5 

10  786 

June        2 

15.9 

I 

d  5  S  2  f 

5.0 

5.0 

5.0 

791 

30 

15.8 

II 

d  3  S  4  f 

3.0 

3.0 

2.8 

819 

S6e 

2.3 

July       11 

16.4 

I 

d  4S4f 

3.5 

3.5 

3.5 

830 

29 

16.8 

I 

d  7  S  3  f 

5.5 

4.9 

5.2 

848 

Aug.        7 

15.7 

I 

d  7  S  3  f 

5.5 

4.9 

5.2 

857 

12 

15.8 

I 

d  7S3f 

5.5 

4.9 

5.2 

862 

24 

15.3 

I 

d  7S3f 

5.5 

4.9 

5.2 

874 

29 

15.5 

I 

d  5.5  S  4.5  f 

4.0 

3.8 

3.9 

879 

Sept.        6 

15.1 

I 

d  6S4f 

4.5 

4.2 

4.4 

887 

Oct.         7 

15.8 

I 

d  7  S  3  f 

5.5 

4.9 

5.2 

918 

7120  *  Cygni         SERIES  III  &  V. 

(1900)  19"  46m  44s  (+2S.31);     +32°  39.7     (+OM5) 

Period  :  406d.02  db  ;         Variation  :  5M— 13M.5 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

g 

tier 

+29°3684 

0.0 

(5.3)BD 

f 

in  i 

+  33°3587 

4.8 

(5.4)  » 

e 

2 

+32°3558 

9.2 

(6.5)  " 

d 

3 

+33°3602 

10.8 

(6.9)  " 

c 

6 

+32°3578 

16.3 

8.3 

a 

7 

+  32°3589 

17.3 

8.5 

b 

III  20 

+32°3583 

19.6 

9.1 

Notes  : 

This  star  was  not  on  the  regular  observing  list,  as  it  is  generally  too  faint  for  a  3-inch  telescope.  'The  maximu 
of  1883  was  observed  in  order  to  obtain  some  practical  knowledge  of  this  variable.  The  scale  of  steps  could  n 
be  derived  from  the  observations,  and  was  therefore  based  on  the  steps  of  the  Atlas.  The  stars  c,  a,  b  have  the 
the  steps:  13,  23,  46,  respectively,  and  the  corresponding  numbers  of  the  brighter  stars  were  derived  from  tl 
magnitudes,  by  means  of  the  formula  at  the  end  of  the  Catalogue.  The  brightest  star  g  was  then  chosen  for  tl 
zero  of  the  scale,  and  all  the  numbers  were  divided  by  10. 


7120 


X  Oygni 


Series  III  &  V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


S3  July       31 

15.8 

I 

a  5.5  b 

Aug.        2 

15.0 

I 

c  7  a 

4 

15.4 

I 

c  1  b 

c  4  a 

5 

15.0 

c2b 

c  4  a 

9 

15.5 

II 

cl  b 

c  2a 

20 

14.2 

II 

d  6.5  c 

•    22 

14.2 

I 

d  6  c 

23 

14.5 

11 

d5c 

24 

14.3 

II 

d  4c 

Sept.        2 

14.1 

I 

e  9  d 

3 

14.4 

I 

7.  =  e 

4 

14.3 

I 

f  7e 

5 

14.1 

I 

f  7e 

25 

15.9 

II 

f  2e? 

26 

15.5 

I 

/  =  f 

30 

15.3 

I 

g4f 

Oct.          3 

14.5 

III 

g7f 

6 

15.5 

I 

g5f 

18 

14.7 

D 

X  =  g 

21 

14.6 

X  =g 

29 

16.3 

I 

y  =  g 

Nov.         1 

14.5 

I 

I'-f 

3 

14.5 

I 

fSd 

6 

14.6 

D 

f3d 

7 

14.4 

D 

f4d 

18 

14.2 

II 

f  5d 

26 

14.7 

I 

f  7d 

27 

14.7 

ill 

f8d 

29 

15.1 

II 

f7d 

«4  May       19 

I 

X  in  vis. 

June      14 

I 

u 

July       15 

15.0 

I 

11 

18.6 

09  023 

17.0 

025 

16.6 

027 

16.7 

17.0 

028 

16.7 

16.6 

032 

16.5 

14.4 

043 

14.1 

045 

13.5 

046 

13.0 

047 

12.2 

056 

9.2 

057 

7.9 

058 

7.9 

059 

5.7 

079 

4.8 

080 

1.9 

084 

3.4 

087 

2.4 

090 

0.0 

102 

0.0 

105 

0.0 

113 

(4.8) 

116 

6.6 

118 

6.6 

121 

7.2 

122 

7.8 

133 

9.0 

141 

9.6 

142 

9.0 

144 

>20 

316 

M 

342 

" 

373 

Naked  ee. 


*) 


*)  Iii  telescope:  %>  f;  naked  eye:  •/  <  f '. 


7257  R  Sagittae  SERIES  IV. 

(1900)   20"  9m  30s    (-h2".74);     +  16°  25'.4    (+OM8) 

Period  :  70d.52  ±  ;     Variation  :  8|M  — 10M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

h 

H-15°4099 

0.0 

8  .  5  BD. 

g 

+  16°4192 

3.0 

8.7    " 

f 

4203 

5.3 

9.2    " 

d 

4200 

8.3 

9.3    " 

a 

+  16°4191 

13.3 

9.5    " 

(72) 


7257 


R  Saqittse 


Series  IV. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

b 

84  June      28 

15.6 

II 

g5d 

5.6 

6.2 

09  356 

g  7  d  (Z) 

6.7 

July       15 

15.1 

I 

d  7  a 

11.8 

11.8 

373 

19 

16.1 

I 

d  4  a 

10.3 

10.1 

377 

d  3  a  (Z) 

9.8 

Aug.       23 

15.4 

I 

f  6d 

7.1 

6.8 

412 

f4d(Z) 

6.5 

Sept.       10 

15.7 

II 

f3d 

6.2 

6.5 

430 

g7d 

6.7 

20 

14.9 

I 

d  5a 

10.8 

11.3 

440 

» 

f8a 

11.7 

Oct.        10 

14.9 

I 

hlOg 

3.0 

2.7 

460 

h5  f 

j        2.6 

h3d 

2.5 

16 

15.1 

III 

R  =  g 

3.0 

4.1 

466 

h  8  f 

4.2 

h  6d 

5.0 

Nov.        7 

15.2 

I 

f9d 

7.5 

7.6 

488 

f3  a 

7.7 

14 

14.7 

I 

f  1  d 

5.6 

5.1 

495 

g3d 

4.6 

85  July         2 

15.7 

[ 

d  3a 

9.8 

10.0 

725 

f6a 

10.1 

15 

15.7 

I 

f  1  d 

5.6 

4.3 

738 

g2d 

4.1 

h4d 

3.3 

Aug.        4 

16.1 

I 

f  3d 

6.2 

6.6 

758 

f2a 

6.9 

10 

15.8 

I 

f8  d 

7.7 

8.1 

764 

f 

f4a 

8.5 

13 

16.3 

.  I 

f  1  d 

5.6 

5.4 

767 

r 

g4d 

5.1 

14 

15.1 

I 

g9f 

5.1 

4.9 

768 

.  ^  * 

g3d 

4.6 

15 

15.1 

III 

g4f 

3.9 

4.3 

769 

Difficult 

g3d 

4.6 

16 

15.1 

D 

g3f? 

3.7 

3.9 

770 

Clouds 

g2d? 

4.1 

18 

15.1 

D 

g3f 

3.7 

3.9 

772 

g2d 

4.1 

28 

14.8 

I 

dial! 

8.8 

8.8 

782 

30 

15.0 

I 

d  2a 

9.3 

8.8 

784 

f3a 

(7.7) 

Sept.        1 

15.7 

I 

d  2  a 

9.3 

8.9 

786 

f4a 

8.5 

5 

14.6 

I 

d  3a! 

9.8 

9.6 

790 

f5a! 

9.3 

9 

15.6 

II 

d  10  a  !  ! 

13.3 

13.3 

794 

74 


7257 


R  Sagittal 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky, 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  Sept.      10 

h 

14.3 

I 

d  7  a  ! 

11.8 

11.8 

09  795 

fSa! 

11.7 

13 

14.5 

I 

d  6  a 

11.3 

11.5 

798 

f8  a 

11.7 

14 

15.4 

I]) 

d  7a 

11.8 

11.8 

799 

f8  a 

11.7 

16 

15.4 

ID 

<17  a. 

11.8 

11.8 

801 

f8a 

11.7 

17 

15.1 

II  D 

d6a 

11.3 

11.1 

802 

f  7a 

10.9 

19 

14.7 

D 

d  3a 

9.8 

9.6 

804 

f5a 

9.3 

20 

14.8 

DD 

d  2a 

9.3 

8.5 

805 

f3a 

7.7 

21 

15.1 

DDD 

d  2  a 

9.3 

8.5 

806 

f-8-a 

7.7 

24 

14.9 

« 

f4d! 

6.5 

6.5 

809 

25 

14.5 

« 

R  =  f 

5.3 

4.3 

810 

h8g 

(2.4) 

26 

14.9 

ill" 

h9g 

2.7 

3.5 

811 

h  8  f 

4.2 

Oct.          1 

14.1 

II 

h9f 

4.8 

3.8 

816 

f=g? 

h9g 

2.7 

5 

14.1 

I 

h  7f 

3.7 

3.2 

820 

g>f! 

h9g 

2.7 

" 

15.7 

" 

h  8f 

4.2 

3.5 

h9g 

2.7 

8 

14.8 

I 

h9g? 

2.7 

3.4 

823 

Eye  tired. 

h5d? 

4.1 

9 

15.3 

I 

g9f 

5.1 

4.9 

824 

g3d 

4.6 

10 

15.1 

ill 

g9f 

5.1 

5.1 

825 

g4d 

5.1 

11 

15.3 

III 

f  1  d  ! 

5.6 

5.9 

826 

g6d! 

6.2 

13 

15.1 

I 

g5d! 

5.6 

5.8 

828 

f  2d! 

5.9 

15 

15.0 

D 

g6d 

6.2 

6.4 

830 

Near  D 

f4d 

6.5 

16 

14.9 

D 

f3d 

6.2 

6.2 

831 

22 

14.6 

DDD 

d  1  a? 

8.8 

(8.3) 

837 

f3a 

7.7 

23 

14.1 

" 

f  9d 

7.5 

7.5 

838 

26 

14.3 

ill 

f  7d? 

7.4 

7.6 

841 

f3a? 

7.7 

28 

14.4 

I 

f  7d 

7.4 

7.3 

843 

g8d 

7.2 

29 

16.1 

f  10  d 

8.3 

8.0 

844 

f3a 

7.7 

Nov.        4 

15.2 

II 

f9d  ! 

7.5 

7.6 

850 

f3a 

7.7 

9 

15.2 

II 

f8  d 

7.7 

7.4 

855 

-  - 

g9d 

7.8 

g3a 

(6.1) 

7257 


R  Sagittfc 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  Nov.       12 

h 

14.9 

II 

d  la 

8.8 

8.2 

09  858 

R  not  >  d  ! 

f  2  a 

(6.9) 

23 

15.2 

HDD 

R  invis. 

>8 

869 

d  &  f  vis.;  low. 

26 

15.5 

i 

d  7  a  !  ! 

11.8 

11.8 

09  872 

86  June        2 

16.6 

i 

g6d 

6.2 

5.7 

10  060 

• 

g9f 

5J 

23 

16.1 

ii 

d  5  a 

10.8 

10.9 

081 

f7a 

10.9 

July         1 

16.1 

in 

h9g 

2.7 

2.7 

089 

i 

h  5  f 

2.6 

METHOD  BY  STEPS: 


87  May       24 
June      15 

17.0 
16.3 

I 

f  1  R  2  d 
g  2R  2d 
d  1  R  3  a 

6.3 

5.7 
9.8 

6.3 
5.7 
9.5 

6.0 
9.7 

416 
438 

19 

16.0 

I 

h  1  R  1  g 
h  1  R  2f 

1.5 
2.2 

1.5 

1.8 

2.0 

442 

21 

15.8 

R4d 
h  2  R  1  g 
R2f 

(4.3) 
2.0 
3.3 

2.0 

2.4 

444 

July       10 

15.8 

I 

f  2R  1  d 

7.3 

7.3 

7.3 

463 

15 

15.9 

I 

f  1  R  2d 

6.3 

6.3 

7.1 

468 

f  1  R  3  a 

8.3 

7.3 

22 

15.9 

I 

h  2  R  0  f 

3.6 

2.8 

475 

Rl-g 

2.0 

Aug.        6 

15.3 

II 

f  2R1  d 

f  2  R  4  a 

7.3 

8.3 

7.3 

8.0 

7.7 

490 

Sept.        6 

16.2 

II 

gl  R2f 
gl  R3d 

3.7 
4.7 

3.8 
4.3 

4.1 

521 

15 

15.5 

I 

g  1  R  2d 
ROf 

5.1 
5.3 

4.8 

5.1 

530 

18 

15.4 

I 

g  1  R  2  d 
ROf 

5.1 
5.3 

4.8 

5.1 

533 

Oct.        12 

14.8 

f  2R  1  d 

7.3 

7.3 

6.8 

557 

18 

14.8 

II 

g  2R  1  d 
f  4  R  5  a 

6.2 
8.8 

6.5 

8.9 

9.0 

563 

d  1  R 

9.3 

Nov.      11 
17 

15.5 
15.0 

II 
I 

g2.5R1.5f 
h3R  1  g 
h  3  R  1  f 

4.6 
2.5 
3.7 

4.4 
2.2 
4.0 

4.5 
3.5 

587 
593 

h  3  R  3  d 

4.2 

4.2 

88  May       28 

16.3 

I 

d  3  ROa 

12.3 

12.3 

786 

June        2 

16.0 

I 

d  1  R  2  a 

10.3 

10.0 

10.2 

791 

30 

15.9 

II 

f  2  R  1  d 

7.3 

7.3 

7.7 

819 

f  2  R  4  a 

8.3 

8.0 

July       11 

16.5 

I 

g  1  R  1  f 
h  3  R  1  f 

4.1 
3.7 

4.1 
4.0 

4.0'* 

830 

29 

16.8 

I 

f  1  R  2  d 

6.3 

6.3 

6.3 

848 

Seeing  poor. 


76 


7257 


Sagittfc 


Series  IV. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

1 

II 

Mean 

2400000+ 

Remarks 

88  Aug.        7 

h 

15.8 

I 

d  4  R  1  a  ! 

12.3 

12.3 

12.3 

10  857 

12 

15.9 

I 

al  R 

14.3 

(14.3) 

862 

24 

15.4 

I 

f  1  Rl  d 

6.8 

6.8 

6.8 

874 

29 

15.6 

I 

g2Rl  f 

4.5 

4.5 

4.4 

879 

R4d 

4.3 

Sept.        (* 

15.1 

I 

f  1  R3d 

5.8 

6.0 

5.9 

887 

Oct.         7 

16.0 

I 

d  1  R4a 

9.3 

9.3 

9.3 

918 

7261  R  Delphini  SERIES  II, 

(1900)  20"  10m  5s    (+28.90);     +8°  47M     (+OM8) 

Period:  285d.5,  periodic  inequal.?;     Variation:  8M — 12M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Mag-n. 

e 
d 

1 

2 

+8°4393 
9°4452 

0.0 
7.0 

(6.7) 
8.4 

c 

4 

8°4383 

10.5 

8.7 

a 

7 

4389 

14.8 

9.0 

b 

10 

4385 

16.8 

9.2 

f 

15 

4384 

20.8 

9.8 

h 

g 

14 

27 

+8°4388 

(20.8) 
23.8 

9.6 
11.0 

7261 


R  Delphini 


Series  If. 


77 


ISOO-f 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

DECIMAL  METHOD: 


83  July       25 

16.5 

II 

R  —  b 

16.8 

09  017 

28 

15.8 

I 

c3b 

12.4 

020 

30 

15.8 

II 

d  9  c 

10.1 

022 

31 

16.2 

I 

d  6.5  c 

9.3 

023 

Aug.        2 

14.6 

I 

d  5.5  c 

8.9 

025 

4 

15.9 

11 

d  1.5  c 

7.5 

027 

5 

14.6 

d  6c 

9.1 

028 

9 

15.9 

II 

d  4.5  c 

8.6 

032 

20 

14.8 

II 

e9d 

6.3 

043 

22 

14.4 

I 

e9d 

6.3 

045 

1  23 

14.8 

II 

eSd 

5.6 

046 

24 

14.5 

11 

e8  d 

5.6 

047 

Sept.        2 

14.4 

I 

e8d 

5.6 

056 

3 

14.6 

I 

e  7.5  d 

5.3 

057 

4 

14.5 

I 

e  7.5  d 

5.3 

058 

5 

14.4 

I 

e8  d 

.5.6 

059 

25 

15.8 

II 

d  3a 

9.3 

079 

26 

14.8 

I 

d3a 

9.3 

080 

30 

14.9 

I 

d5a 

10.9 

084 

Oct.         3 

14.4 

III 

d6a 

11.7 

087 

6 

15.4 

I 

d  7  a 

12.5 

090 

21 

14.6 

R  —  f 

20.8 

105 

29 

14.6 

I 

R  —  g 

23.8 

113 

Nov.        1 

14.1 

I 

R  <  g 

>23.8 

116 

3 

15.3 

I 

R  =  g 

23.8 

118 

84  June       26 

17.0 

I 

d  9  c 

10.1 

9.6 

354 

d  6  c  (Z) 

9.1 

July       15 

15.4 

c  9  b 

16.2 

15.9 

373 

c  8  b  (Z) 

15.5 

19 

16.3 

I 

bl  f 

17.2 

18.0 

377 

b5  f(Z) 

18.8 

Aug.      23 

15.8 

I 

R  hardly  vis. 

>  24 

412 

Sept.      17 

R  invis. 

cc 

437 

Oct.        10 

15.0 

I 

cc         cc 

CC 

460 

16 

15.2 

III 

cc         cc 

cc 

466 

Nov.        7 

15,4 

I 

cc         cc 

(C 

488 

85  July         2 

16.7 

I 

R  invis. 

>24 

725 

15 

15.9 

I 

1C            CC 

cc 

738 

Aug.        4 

16.2 

I 

CC            1C 

cc 

758 

10 

16.0 

I 

cc         cc 

cc 

764 

Sept.        5 

14.6 

I 

cc         cc 

cc 

790 

13 

15.8 

I 

cc         cc 

" 

798 

Oct.          1 

14.7 

II 

1C            CC 

cc 

816 

Nov.        4 

16.3 

II 

C.'              CC 

cc 

09  850 

86  June        2 

17.8 

I 

R  invis. 

>24 

10  060 

July         1 

16.5 

III 

cc           cc 

CC 

089 

R  >  a 


R  <f 


7261 


R  Delphini 


Series  II. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

11 

Mean 

2400000+ 

Remarks 

METHOD  BY  STEPS: 


87  May       24 
June      15 

n 

17.2 
16.5 

I 

R  barely  vis. 
a  1  R  1  b 

15.8 

15.8 

>24 

15.8 

19 

16.1 

I 

c  3  R  2b 

14.2 

14.3 

13.5 

21 

15.8 

c3  R  3  a 
c2R3b 

12.7 
13.1 

12.7 
13.0 

13.0 

R  2a 

12.8 

23 

15.8 

I 

d  3  R  3  a 

10.4 

10.9 

10.6 

ROc 

10.5 

25 

15.6 

II 

d  3R3  a 

10.4 

10.9 

10.3 

R  1  c 

9.5 

July       10 

15.9 

I 

R2d 
R3c 

5.0 
7.5 

6.3 

15 

16.0 

I 

e5R2d 

5.0 

5.0 

5.7 

e5  R3c 

6.3 

6.6 

22 

16.0 

I 

e4R3d 

4.0 

4.0 

4.7 

e4R4c 

5.3 

5.3 

Aug.        6 

15.5 

I 

Rid 
R  4c 

6.0 
6.5 

6.3 

Sept.        6 
16 

16.3 
15.1 

II 
II 

b2R2f 
f  1  R2g 

18.8 
21.8 

18.8 
21.8 

18.8 
21.8 

18 
Oct.       12 

15.5 
14.9 

I 

h  1  R  2  g 

R  barely  vis. 

21.8 

21.8 

21.8 
>24 

88  June        2 

16.1 

I 

a  1  Rl  b 

15.8 

15.8 

15.4 

c3  R  1  b 

14.7 

15.2 

444 
446 
448 
463 
468 
475 
490 

521 
531 
533 
557 

791 


Nova  Andromedae    1885 

(1900)  Oh  37m  15°    (+35.26) ;     +40°  43'.2    (+0'.33) 

Variation  :  7M —  <  13M 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

A 

+  40°158 

7.5  BD. 

D 

151 

8.9 

B 

156 

9.0 

C 

+  40°154 

9.0 

Notes  : 

The  3-inch  equatorial  was  evidently  unable  to  show  the  variations  of  this  star  so  as  to  give  a  knowledge  of 
its  light  curve.  The  feeble  attempt,  which  the  novelty  of  this  phenomenon  seemed  to  demand,  is  here  reproduced, 
with  a  reduction  to  the  magnitudes  of  the  BD.  scale. 


Nova  Andromeda  1885. 


79 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 


85  Sept. 


Oct. 


Nov. 


9 

15.2 

II 

A8B! 

10 

14.2 

I 

A  7  B 

A8  D 

13 

14.1 

I 

A8  B 

A  9D 

14 

.    15.8 

I]) 

A  9B 

A  10  D 

15 

15.5 

I  D 

A  9B 

16 

15.0 

ID 

A8  B 

A9D 

17 

15.6 

II  D 

D  J  B 

18 

15.5 

D 

D  1  B 

19 

14.6 

D 

DIB 

20 

14.8 

DD 

D  10  B 

21 

14.9 

DDD 

D  10  B 

22 

14.6 

DDD 

N  =  C 

23 

14.5 

DDD 

N<C 

24 

14.7 

DDD 

N<C 

25 

14.8 

DDD 

N<C 

26 

14.8 

Jll 

N<C 

1 

14.0 

II 

N  invis. 

5 

14.0 

I 

« 

8 

14.5 

I 

' 

13 

15.5 

I 

•' 

15 

15.2 

D 

' 

16 

15.2 

D 

' 

4 

15.7 

II 

' 

9 

15.5 

I 

8.7 

09  794 

8.5 

795 

8.6 

8.7 

798 

8.8 

8.8 

8Q 

799 

.  f 

8.8 

800 

8.7 

80 

801 

.0 

8.9 

,802 

8.9 

803 

8.9 

804 

9.0 

805 

9.0 

806 

9.0 

807 

>9.0 

808 

>9.0 

809 

>9.0 

810 

>9.0 

812 

>10 

816 

a 

820 

u 

823 

(I 

828 

1C 

830 

«< 

831 

« 

850 

u 

855 

Cloudy 


II.  Observations  made  by  Arthur  Zaiser  from  1884  to  1887. 

These  observations  were  made  by  Arthur  Zaiser,  a  student  of  the  College  in  Prairie  du  Chien,  Wisconsin. 
They  were  all  made  with  the  naked  eye,  aided  sometimes  by  an  opera-glass.  The  value  of  one  step  differs  widely 
for  the  different  variables,  especially  for  the  brighter  ones,  and  amounts  on  the  average  to  almost  0.3  of  a 
magnitude. 


1411  a  Tauri  SERIES  V. 

(1900)  3"  55m  8°  (+38.32);     -f!2°  12'.5    (+OM7) 

Period:  3d  22"  52m.02;     Var. :  3M.4— 4M.2. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

1 

+  8°511 

0.0 

3.8 

r 

27 

lo°612 

0.0 

3.8 

t- 
c 

2 

9°439 

3.8 

3.8 

!J- 

26 

8°657 

4.5 

4.3 

f 

3 

+  12°486 

10.0 

4.3 

Notes : 

The  observations  of  this  star,  which  is  of  the  Algol-type,  were  made  for  practice  rather  than  with  a  view  of 
obtaining  exact  times  of  minima.  For  this  reason  no  particular  care  was  taken  of  applying  a  correction  to  the 
watch,  which  may  have  been  two  or  three  minutes  wrong. 


(80) 


1411 


Tauri 


Series  V. 


81 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000 

Remarks 

DECIMAL  METHOD: 

84  Oct.        11           15"  16"' 

II          ' 

o3  f 

3.0 

2.6 

09  461 

FG. 

06? 

2.3 

12 

15  20 

I 

o3f 

3.0 

2.9 

462 

o7£ 

2.7 

16 

15  38 

II 

o3f 

3.0 

2.9 

466 

o7c 

2.7 

Nov.        7 

15  44 

I 

o3  f 

3.0 

2.9 

'488 

o7l 

2.7 

18 

15  12 

I 

o3f 

3.0 

3.0 

499 

» 

o  S,- 

3.0 

Dec.         9 

14  22 

II 

o  2f 

2.0 

2.4 

520 

o7  ,- 

2.7 

18 

15     5 

I 

o3f 

3.0 

3.0 

529 

4h  after  Eph.  Min. 

o8c 

3.0 

85  Jan.         9 

15  35 

I 

o2f 

2.0 

2.7 

551 

o  9  £ 

3.4 

Febr.      11 

15  15 

I 

o3f 

3.0 

2.7 

584 

4h  before  Eph.  Min. 

06? 

2.3 

Mar.         7 

14  42 

I 

o4f 

4.0 

3.7 

608 

F  G.    2h  after  Eph.  Min 

o  9  * 

3.4 

9 

15     9 

II 

o2f 

2.0 

2.0 

610 

u 

o  5  f 

1.9 

Oct.         8 

15  42 

I 

o3f 

3.0 

3.7 

823 

£1  f 

4.4 

9 

15  46 

I 

o2f 

2.0 

2.9 

824 

£0f 

3.8 

Nov.        9 

15  13 

I 

o3f 

3.0 

3.7 

855 

£lf 

4.4 

Dec.         6 

15  16 

I 

o2f 

2.0 

2.9 

882 

eof 

3.8 

11 

15  16 

I 

o  2f 

2.0 

2.0 

887 

o  5  * 

1.9 

86  Jan.          6 

13  33 

III 

olf 

1.0 

1.5 

913 

o5,- 

1.9 

9 

15  10 

I 

o7f 

7.0 

7.0 

916 

5|h  before  Eph.  Min. 

?5f 

6.9 

Febr.       1 

15  10 

I 

o2f 

2.0 

2.0 

939 

o  5  f 

1.9 

2 

13  42 

II 

o9f 

9.0 

8.6 

940 

Eph.  Hel.  Min.  14h  71" 

£7f 

8.1 

« 

14     9 

a 

o9.5f 

9,5 

9.2 

u 

f  8  f 

8.8 

8 

14  55 

III 

o3f 

3.0 

3.4 

946 

eof 

3.8 

22 

14    6 

II 

o4f 

4.0 

4.2 

960 

FG. 

elf 

4.4 

Mar.         2 

15  28 

I 

o  2f 

2.0 

2.2 

968 

o6f 

2.3 

82 


1411 


-*   Tauri 


Series  V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000 

Remarks 

86  Oct.        29 

15"  15" 

I 

o3f 
o7,- 

3.0 

2.7 

2.9 

10  209 

87  Mar.       24 


28 


METHOD  BY  STEPS 


15  25 

II 

r2*2v 

2.3 

2.3 

2.3 

355 

15  38 

« 

r  3  *  2  n 

2.7 

2,8 

2.8 

it 

15  49 

u 

r  3  *  1  /, 

3.4 

.     3.3 

3.4 

a 

15  58 

u 

r  4  *  0.5  /, 

4.0 

4.0 

4.0 

a 

16     9 

u 

r  4  /  0.5  ^ 

4.0 

4.0 

4.0 

u 

16  25 

ii 

r  5  A  0.5  /, 

4.1 

4.5. 

4.3 

u 

14  33 

II 

r  4  A  o  ^ 

4.3 

4.5 

4.4 

359 

14  39 

« 

r  4  /  0.5  ,* 

4.0 

4.0 

4.0 

u 

14  51 

n 

r  4  /i  0  IL 

4.3 

4.5 

4.4 

u 

15  10 

a 

rUl/j. 

3.6 

3.8 

3.7 

u 

15  25 

(i 

r  3  ;.  1.5  fi 

3.0 

3.3 

3.2 

u 

15  35 

u 

r  3  /  2  //. 

2.7 

2.8 

2.8 

a 

FG.  Eph.Hel.Min.loh43n 


"    Low. 
FG.  Eph.Hel.Min.l4h35n 


2098  a  Orionis  SERIES  V. 

(1900)  5h  49m  45s    (+38.25) ;     +7°  23'.3     (+0'.02) 

Irregularly  periodic ;     Variation  :  1M — 1M.4. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

£ 

39 

—  8°1063 

2.4 

0.3 

a. 

9 

+  16°  629 

3.4 

1.1 

r 

43 

+  6°  919 

6.2 

1.6 

Notes  : 

The  comparison  star  a  is  «  Tauri.  Five  comparisons  with  SirivA  were  omitted,  as  this  star  is  too  bright  and 
too  different  in  color  to  give  useful  results.  The  observations  may  not  contribute  much  to  the  knowledge  of  the 
irregular  variations  of  this  star,  since  it  is  not  a  suitable  object  for  the  method  by  steps,  and  seems  to  require  a 
photometer. 


2098 


a  Orionis 


Series  V. 


83 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Nov.        7 

15.9 

I 

/?3r 

3.5 

3.4 

09  488 

ft  9  a 

3.3 

8 

15.4 

I 

/33r 

3.5 

3.4 

489 

/3  9  a 

3.3 

Dec.         9 

14.4 

II 

is  2r 

3.2 

3.3 

520 

fi$& 

3.3 

18 

15.3 

I 

ft-I-r 

2.8 

3.0 

529 

13  7  a 

3.1 

85  Jan.         9 

15.7 

I 

13  1  r 

2.8 

3.0 

551 

08  a 

3.2 

Febr.       7 

15.2 

III 

01  r 

2.8 

2.8 

,580 

11 

15.4 

I 

/?0r 

2.4 

2.4 

584 

Mar.         7 

14.8 

I 

/3  1  r 

2.8 

2.8 

608 

9 

15.2 

II 

j3  1  Y 

2.8 

2.8 

610 

Apr.       10 

14.0 

II 

pOr 

2.4 

2.4 

642 

Nov.        9 

15.8 

I 

plr 

2.8 

2.7 

855 

0  2  a 

2.6 

Dec.         6 

15.4 

I 

/*  1  r 

2.8 

2.7 

882 

0  1.5  a 

2.6 

11 

15.4 

I 

i3  2.5  r 

3.3 

3.1 

887 

0  4.5  a 

2.9 

86  Jan.          6 

13.7 

III 

/?0r 

2.4 

2.5 

913 

/?  1  a 

2.5 

9 

15.3 

I 

01.7 

2.8 

2.7 

916 

/52a 

2.6 

Febr.       1 

15.2 

I 

/SOr 

2.4 

2.5 

939 

/s  1  a 

2.5 

8 

15.0 

III 

/SOT 

2.4 

2.5 

946 

01  a 

2.5 

22 

14.2 

II 

/sir 

2.8 

2.5 

960 

/?3  a 

2.7 

Mar.         2 

15.6 

I 

/?0r 

2.4 

2.5 

968 

/9  1  a 

2.5 

6 

15.0 

I 

/?0r 

2.4 

2.5 

972 

/?  1  a 

2.5 

21 

15.1 

ID 

ft  Or 

2.4 

2.5 

987 

/si  a 

2.5 

Apr.         2 

15.1 

I 

/50r 

2.4 

2.4 

09  999 

/?0a 

2.4 

Dec.       15 

14.5 

I 

£2f 

3.2 

3.1 

10  256 

/?6a 

3.0 

29 

14.3 

I 

/»!  r 

2.8 

2.8 

270 

/?3a 

2.7 

87  Jan.        14 

15.2 

I 

y50.5r 

2.6 

2.6 

286 

/52a 

2.6 

84 


2098 


a  Orioms 


Series    V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

METHOD  BY  STEPS: 


Jan.   28 

14.8 

II 

/?  0  «  2  r 

3.3 

3.3 

10  300 

Febr.  12 

14.4 

I 

/?  1  «  4  r 

2.8 

3.2 

3.0 

315 

16 

15.1 

II 

ft  0  a  5  Y 

1.8 

1.8 

319 

Mar.   13 

14.7 

II 

/?  0  «  6  r 

1.3 

1.3 

344 

17 

14.4 

II 

/S  0.5  «  4  r 

2.6 

2.8 

2.7 

348 

24 

15.7 

II 

a  1  /S 

1.4 

1.8 

355 

a  4  r 

2.2 

28 

15.2 

II 

/s  0  «  3  r 

2.8 

2.8 

359 

2509  f  Geminorum  SERIES  V. 

(1900)  6h  58m  11s    (+3'.56);     +  20°  43'.0    (—  0'.09) 

Period:  10.d15382;      Variation:  3M.7  — 4M.5. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn.  . 

/> 

74 

+  16°1443 

0.0 

3.7 

d 

75 

22°1645 

2.1 

3.5 

d 

69 

+  21°1405 

15.0 

5.3 

Notes  : 


The  step-interval  between  9  and  d  is  too  large  to  yield  concordant  results.     The  table  of  comparison  stars  in 
the  Atlas  (Ser.  V,  ch.  VI)  shows  that  the  comparison  star  d  has  not  been  employed  by  any  other  observer. 


2509 


C  Geminorum 


Series  V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

84  Dec.       18 

15.  '5 

I 

A5d 

7.5 

6.7 

09  529 

FG. 

53d 

6.0 

85  Jan.          9 

15.8 

I 

A3d 

4.5 

4.6 

551 

5  2  d 

4.7 

Febr.       7 

15.4 

III 

A  3d 

4.5 

4.6 

580 

FG. 

52d 

4.7 

11 

15.5 

I 

A2d       . 

3.0 

3.2 

584 

5  1  d 

3.4 

Mar.         7 

15.0 

I 

43d 

4.5 

4.0 

608 

FG. 

51  d 

3.4 

9 

15.3 

II 

A3  d 

4.5 

4.0 

,  610 

5  1  d 

3.4 

Apr.         3 

14.9 

I 

A3d 

4.5 

4.6 

635 

FG. 

5  2  d 

4.7 

10 

14.9 

II 

A  2d 

3.0 

2.6 

£42 

tt 

50  d 

2.1 

May         9 

15.6 

II 

A9d 

(13.5) 

(9.8) 

671 

11 

53d 

6.0 

Dec.         6 

15.2 

I 

A2d 

3.0 

3.9 

882 

FG. 

52d 

4.7 

11 

15.6 

I 

A  1  d 

1.5 

1.8 

887 

a 

5  0  d 

2.1 

86  Jan.         6 

13.8 

III 

A5d 

7.5 

6.7 

913 

FG. 

53d 

6.0 

9 

15.4 

I 

A3d 

4.5 

4.0 

916 

51  d 

3.4 

Febr.       1 

15.3 

I 

A  1  d 

1.5 

1.8 

939 

50d 

2.1 

2 

13.8 

II 

A3d 

4.5 

4.0 

940 

5  1  d 

3.4 

8 

15.1 

III 

A2.5d 

3.8 

3.6 

946 

FG. 

5ld 

3.4 

22 

14.3 

II 

A  2  d 

3.0 

3.2 

960 

51  d 

3.4 

Mar.         2 

15.7 

I 

Al  d 

1.5 

2.5 

968 

51  d 

3.4 

6 

15.1 

I 

A3  d 

4.5 

5.3 

972 

53d 

6.0 

21 

15.2 

ID 

A3d 

4.5 

4.9 

987 

F  G. 

52.5d 

5.3 

Apr.         2 

15.3 

I 

A  2d 

3.0 

3.9 

09  999 

5  2  d 

4.7 

4 

15.1 

II 

A3d 

4.5 

4.9 

10  001 

FG. 

52.5d 

5.3 

6 

15.2 

I 

A5d 

7.5 

8.1 

003 

<  i 

55  d 

8.6 

27 

14.6 

n 

A5d 

7.5 

7.4 

024 

" 

54d 

7.3 

86 


2509 


C  Geminorum 


Series   V. 


]800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  May         1 

h 
15.1 

II 

A  1  d 

1.5 

2.5 

10  028 

FG. 

51  d 

3.4 

6 

14.8 

III 

A6d 

9.0 

9.4 

033 

K 

£6  d 

9.8 

11 

15.3 

3) 

A  1  d 

1.5 

2.5 

038 

It 

aid 

3.4 

Dec.       15 

14.3 

I 

A2d 

3.0 

3.2 

256 

d  1  d 

3.4 

29 

14.3 

I 

A3d 

4.5 

4.6 

270 

32  d 

4.7 

87  Jan.       14 

14.9 

I 

/13d 

4.5 

4.6 

286 

FG. 

d  2d 

4.7 

METHOD  BY  STEPS 


Jan.        28 

14.4 

II 

A4: 

4.0 

3.6 

300 

#i  : 

3.1 

Febr.      12 

14.5 

I 

A2C1  d 

1.6 

1.4 

1.5 

315 

16 

15.0 

II 

A4: 

4.0 

3.6 

319 

d\.  : 

3.1 

Mar.       13 

14.5 

II 

*•  2  :  0  8 

2.1 

2.1 

2.1 

344 

17 

14.3 

I 

AS: 

5.0 

4.6 

348 

52  : 

4.1 

24 

15.5 

II 

A  2:  05 

2.1 

2.1 

2.1 

355 

28 

15.1 

II 

A4: 

4.0 

4.1 

359 

52C 

4.1 

Apr.       18 

15.1 

II 

A3": 

3.0 

3.3 

380 

5  1.5  c 

3.6 

20 

14.9 

I 

A  3.5  : 

3.5 

3.3 

382 

51  : 

3.1 

25 

15.6 

I 

A  2  : 

2.0 

t 

2.3 

387 

50.5  : 

2.6 

May       10 

14.8 

I 

AS: 

3.0 

3.1 

402 

5  1  : 

3.1 

15 

15.3 

II 

A  2  : 

2.0 

2.3 

407 

50.5  : 

2.6 

18 

16.2 

I 

A  2  : 

2.0 

2.6 

410 

51  : 

3.1 

5374  £  Librae  SERIES  V. 

(1900)  14h  55m  388  (-I-3S.20);      -8°  7'.3  (— 0'.24) 

Period  :  2d  7h  51m  228.8  ;     Variation  :  5M.0— 6M.2. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

6 

—  3°3696 

0.0 

4.6 

b 

— 

—  1°2991 

1.9 

5.0 

e 

9 

—  4°3783 

5.4 

6.0 

Notes : 

• 

Although  the  observations  of  this  Atgol-siaT  were  not  made  with  a  systematic  plan  to  obtain  the  exact  time  of 
the  minima,  still  they  determine  the  ascending  branch  of  the  light  curve  on  three  different  occasions. 


(87) 


8  Librae 


Series   V. 


1800+           Gr.  M.  T. 

Sky 

Comparisons 

1 

II 

Mean 

2400000  + 

Remarks 

DECIMAL    METHOD: 

84  Sept.      11           14h14m 

I 

ale 

0.5 

0.4 

09  431 

F  G.  used  throughout. 

a  4  b 

0.2 

17 

13  48 

I 

a9c 

4.9 

4.3 

437 

2"  after  Eph.  Min. 

b  5c 

3.7 

85  May         5 

15  45 

II 

ale 

0.5 

0.8 

667 

a  5b 

1.0 

8 

16    2 

I 

a  3  c 

1.6 

2.0 

670 

b  1  c 

2.3 

13 

16  46 

III 

a  4  c 

2.2 

2.2 

675 

*) 

bl  c 

2.2 

June        4 

15  40 

I 

a  3  c 

1.6 

2.0 

697 

b  1  c 

2.3 

8 

15  56 

I 

a  2c 

1.1 

1.5 

09  701 

bOc 

1.9 

86  Apr.       27 

15  27 

II 

ale 

0.5 

0.9 

10  024 

a  7  b 

1.3 

May         1 

14  51 

I 

a  8  c 

4.3 

4.0 

028 

b5  c 

3.7 

M 

15    0 

" 

a  8.5  c 

4.6 

4.2 

a 

Eph.  He).  Min.  15h  Om 

b5c 

3.7 

" 

15  13 

" 

a  8  c 

4.3 

4.0 

(C 

b5c 

3.7 

it 

15  33 

" 

a  8  c 

4.3 

4.0 

11 

b5c 

3.7 

(t 

"  15  58 

a 

a  7  c 

3.8 

3.8 

It 

b6c 

4.0 

u 

16     7 

a 

a  6  c 

3.2 

3.5 

" 

b5c 

3.7 

" 

16  17 

u 

a  5  c 

2.7 

3.0 

(I 

,"  .  " 

b4c 

3.3 

6 

15    8 

III 

a  2  c 

1.1 

1.1 

033 

a  5  b 

1.0 

18 

15     5 

I]) 

a3  c 

•    1.6 

1.6 

045 

Near  2) 

a8b 

1.5 

27 

15  34 

I 

ale 

0.5 

0.8 

054 

a6b 

1.1 

29 

16     1 

III 

a  3  c 

1.6 

1.8 

056 

3h  after  Eph.  Min. 

a  10  b 

1.9 

June        2 

15  43 

I 

ale 

0.5 

0.8 

060 

a6b 

1.1 

17 

15  15 

IDD 

a3  c 

1.6 

2.0 

075 

b  1  c 

2.3 

METHOD  BY  STEPS: 

87  May       20 

14  55 

ii 

a  3  d  2  c 

3.2 

3.2 

3.2 

412 

, 

b  1  S2c 

3.2 

3.1 

-. 

')  The  original  has:  a  1  c.  b  4  c,  which  must  be  an  error  in  recording. 


5374 


Series   V. 


89 


18004- 

Gr.  M.  T. 

Sky 

Comparisons 

I 

87  May       20 

15h   5'" 

II 

a  4  d  1  c 

4.2 

b  2  d  1  c 

4.2 

n 

15  13 

u 

a  4  d  1  c 

4.2 

b  2  <J  1  c 

4.2 

ti 

15  24 

u 

a  3  <J  1  c 

3.7 

b  2  £  1  c 

4.2 

u 

15  37 

u 

a  3  a  2  c 

3.2 

bl  £2c 

3.2 

(t 

15  49 

u 

a  2  d  3  c 

2.2 

b  1  (53  c 

2.7 

27 

14  59 

III]) 

a  5  d  1.5  c 

4.5 

t 

b  3  8  1.5  c 

3.5 

« 

15     8 

a 

a  4  «J  2  c 

3.7 

bl  <*2c 

3.2 

<< 

15  19 

u 

a  4  rj  2  c 

3.7 

b  2  d  2  c 

3.7 

ft 

15  29 

u 

a  4  d  2.5  c 

3.5 

b  2  8  2.5  c 

3.4 

^^ 

15  50 

u 

a  2.5  d  3  c 

2.5 

-  • 

b  1  S3  c 

2.7 

•II 

Moan 

2400000  + 

Remarks 

4.3 

4.2 

10  412 

4.2 

4.3 

4.2 

« 

Ephem.  Hel.Min.  15h10nl 

4.2 

4.1 

4.1 

Cl 

4.2 

3.2 

3.2 

tt 

3.1 

2.2 

2.5 

tl 

2.8 

4.1 

4.1 

419 

Ephem.Hel.Mm.  14h43m 

4.2 

3.6 

3.4 

i  « 

3.1 

3.6 

3.7 

« 

3.7 

3.4 

3.4 

M 

3.4 

2.5 

2.6 

« 

2.8 

6181  a  Herculis  SERIES  V. 

(1900)  17h  10m  59     (+2V73);     +14°  30'.2    (— 0'.07) 

Irregular;     Variation:  3M.l — 3M.9. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

69 

+  12°3252 

0.0 

2.1 

d 

52 

+  25°3221 

1.4 

3.1 

K 

68 

+  9°3298 

2.5 

3.5 

Notes  : 

Comparison  star  a  is  a  Ophinchi,  and  K  is  K  Opliinclii,  while  d  belongs  to  the  constellation  Hercules.  Another 
comparison  star,  fainter  than  K,  should  have  been  chosen,  at  least  for  the  observations  in  1887,  for  which  formula 
II  cannot  now  be  employed.  Charta  X.of  the  Atlas  will  show  that  f,  e,  ?  Herculis  have  been  used  by  other 
observers. 


6181 


Herculis 


Scries  V. 


1800+ 

Or.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Sept.      11 

14.5 

1 

a  9  A: 

2.3 

1.9 

09  431 

a  10  3 

1.4 

17 

14.3 

1 

a  9  A; 

2.3 

1.9 

437 

» 

'  a  10  8 

1.4 

20 

15.7 

I 

a  9  A; 

2.2 

1.8 

440 

a  10*5 

1.4 

85  May         3 

15.8 

II 

a  8  ic 

2.0 

1.7 

665 

a  10  d 

1.4 

8 

15.3 

I 

a  8  K 

2.0 

1.7 

6'70 

a  10  8 

1.4 

13 

16.5 

III 

a  10  A; 

2.5 

2.3 

675 

8  5  K 

2.0 

June        4 

15.5 

I 

a  10  K 

2.5 

2.4 

697 

d  8  K 

2.3 

8 

15.7 

I 

a  9  K 

2.3 

2.0 

701 

d%K 

1.6 

15 

15.3 

III 

a  10  K 

2.5 

2.0 

708 

a  108 

1.4 

17 

15.5 

D 

a  10  K 

2.5 

1.9 

710 

a  9  d 

1.3 

29 

15.7 

D 

a  9  A; 

2.3 

1.9 

722 

a  W  8 

1.4 

30 

15.7 

Hi]) 

a  8  « 

2.0 

1.7 

723 

a9<5 

1.3 

July         2 

15.4 

I 

a  9  /c 

2.3 

1.8 

725 

a9  9 

1.3 

6 

15.7 

ill 

a  9.5  A; 

2.4 

1.9 

729 

a  10  8 

1.4 

Aug.        3 

16.0 

II 

a  9  A; 

2.3 

1.7 

757 

a8* 

1.1 

14 

16.5 

II 

a  9  A; 

2.3 

1.7' 

768 

a  8  d 

1.1 

Sept.      14 

14.4 

II  D 

a  7  A; 

1.8 

1.6 

799 

a  9  d 

1.8 

Oct.         1 

15.0 

II 

a  8  A; 

2.0 

1.7 

816 

a  10  a 

1.4 

5 

15.2 

I 

a  8  A: 

2.0 

1.6 

820 

Low 

a  8  8 

1.1 

8 

15.6 

I 

a  8  K 

2.0 

1.7 

823 

<.' 

a  9  8 

1.3 

9 

15.4 

I 

a  7  A: 

1.8 

1.6 

09  824 

« 

a  9  8 

1:3 

86  May         1 

15.8 

II 

a  9  A; 

2.3 

1.7 

10  028 

a  8  a 

1.1 

6 

15.4 

in 

a  9  A; 

2.3 

1.7 

033 

a  8  d 

1.1 

11 

15.5 

D 

a  7  A; 

1.8 

1.5 

038 

•d88 

1.1 

6181 


a.  Herculis 


Series   V. 


91 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  May       18 

15,3 

I]) 

a  8  K 

2.0 

1.7 

10  045 

a  9  '> 

1.3 

27 

15.4 

I 

a  8  K 

2.0 

1.5 

054 

a  7  $ 

1.0 

29 

15.8 

III 

a  9  A; 

2.3 

1.7 

056 

a  7  3 

1.0 

June        2 

15.5 

I 

a  6  K 

1.5 

1.2 

060 

a  6  d 

0.8 

17 

15.5 

I  ])]) 

a  S  K 

2.0 

1.7 

075 

a  9  S 

1.3 

29 

15.6 

I 

a  9  K 

2.3 

1.7 

087 

a  8  3 

1.1 

July         1 

15.5 

III 

a  9  /s 

2.3 

1.8 

,089 

a.fcJ 

1.3 

5 

16.3 

II 

a  7  /c 

1.8 

1.5 

093 

a  8  a 

1.1 

Aug.      22 

16.0 

II 

a  9  K 

2.3 

1.9 

141 

a  10  a 

1.4 

Oct.         1 

14.5 

I 

a  8  /c 

2.0 

1.5 

181 

a  7  '5 

1.0 

16 

14.5 

HI]) 

a  8  K 

2.0 

1.7 

196 

a  10^ 

1.4 

METHOD  BY  STEPS 


87  Apr.       18 


20 


25 


May       10 


15 


18 


19 


June      14 


17 


16.1 

II 

a  3  « 

3.0 

3.3 

380 

K  1  a 

3.5 

S  2  a 

3.4 

15.7 

I 

a  4  « 

4.0 

4.1 

382 

K  1.5  a 

4.0 

d  3  « 

4.4 

15.9 

I 

a  3.5  « 

3.5 

3.5 

387 

A;  1  a 

3.5 

d  2  a 

3.4 

14.7 

I 

a  4  « 

4.0 

3.6 

402 

K  1  « 

3.5 

d  2  a 

3.4 

15.6 

II 

a  3  « 

3.0 

3.0 

407 

X 

£  1  a 

3.5 

5  1  a 

2.4 

16.4 

I 

a  3  a 

3.0 

3.0 

410 

A;  1  a 

3.5 

5  1  a 

2.4 

15.8 

II 

a  2  a 

2.0 

2.3 

411 

A;  0.5  a 

3.0 

<50.5  a 

1.9 

15.5 

II 

a  4  a 

4.0 

3.0 

437 

A;  1  « 

3.5 

5  0  a 

(1.4) 

16.6 

I 

a  3  « 

3.0 

2.6 

440 

A;.!  « 

3.5 

^0  a 

(1.4) 

92 


618] 


«  Her  culls 


Series  V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

87  June      23 

h 

15.4 

II 

a3  a 

3.0 

3.1 

10  446 

K  1.5  a 

4.0 

S  I  a 

2.4 

July       10 

15.8 

I 

a  3  a 

3.0 

3.3 

463 

K  I  a 

3.5 

8la 

3.4 

18 

16.4 

II 

a3« 

4.0 

3,3 

471 

K  1  « 

3.5 

d.l  a 

2.4 

Aug.      15 

16.4 

a  4  « 

4.0 

3.6 

499 

K  \  a. 

3.5 

• 

3  2  a 

3.4 

6202  u  Herculis  SERIES 

(1900)  17"  13m  388     (-4-2-.21);     +33°  12'.3     (— 0'.07) 
Irregularly  periodic;     Variation:  4M.6 — 5M.4. 
Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

e 

48 

+31°2947 

3.8 

w 

56 

+3202896 

5.3 

c 

58 

+  34°2971 

5.8 

Notes  : 

The  observations,  being  all  made  by  the  decimal  method,  afford  no  means  of  establishing  an  independent 
scale.  They  were  reduced  directly  to  the  magnitudes  of  the  HP.  scale,  which  is  given  in  the  last  column  of  the- 
abvoe  table. 


6202 


u  Herculis 


Series  V. 


93 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Sept.       11 

14.7 

I 

e  6  C 

5.0 

5.1 

09  431 

F  G.  used  throughout. 

£  9  w 

5.2 

17 

14.6 

I 

£  5  c 

4.8 

5.0 

437 

£  9  w 

5.2 

20 

15.9 

I 

£  3  c 

4.4 

4.7 

440 

£  8  w 

5.0 

-85  May         3 

15.9 

II 

£  6  C 

5.0 

5.1 

665 

£9  W 

5.2 

8 

15.5 

I 

£  6C 

5.0 

5.0 

,670 

£  8  W 

5.0 

. 

13 

16.6 

III 

£  9  C 

5.6 

5.5 

675 

£  10  W 

5.3 

June        4 

15.5 

I 

£  6  C 

5.0 

5.0 

697 

£  8  W 

5.0 

8 

15.8 

I 

£  7C 

5.2 

5.2 

701 

£9  W 

5.2 

15 

15.5 

III 

£6c 

5.0 

5.0 

708 

£  8   W 

5.0 

17 

15.5 

3) 

£  8C 

5.4 

5.4 

710 

£  10  W 

5.3 

. 

30 

15.8 

ill]) 

£  3  C 

4.4 

4.7 

723 

£  8  W? 

(5.0) 

July         2 

15.5 

I 

£  4  C 

4.6 

4.9 

725 

£  9  W 

5.2 

6 

15.8 

ill 

£  3  C 

4.4 

4.7 

729 

£  8  W 

5.0 

Aug.        3 

16.1 

II 

£  4  C 

4.6 

4.9 

757 

* 

£9  w 

5.2 

14 

16.6 

II 

£5c 

4.8 

4.9 

768 

£8  w 

5.0 

Sept.      14 

15.5 

II]) 

£  4  c 

4.6 

4.8 

799 

£  8  w 

5.0 

Oct.          1 

15.1 

II 

£  4  c 

4.6 

4.9 

816 

£9  w 

5.2 

5 

15.3 

I 

£2c 

4.2 

4.6 

820 

£  7  w 

4.9 

9 

15.5 

I 

£2c 

4.2 

4.5 

09  824 

£  6  w 

4.7 

86  May       18 

15.4 

I]) 

c~3c 

4.4 

4.7 

10  045 

£  8  w 

5.0 

27 

15.5 

I 

£  5  c 

4.8 

5.0 

054 

£9  w 

5.2 

June        2 

15.6 

I 

£  4  c 

4.6 

4.8 

060 

£  8  w 

5.0 

17 

15.6 

I  ])]) 

£7  C 

5.2 

5.3 

075 

w  1  c 

5.3 

29 

15.7 

I 

£'4  c 

4.6 

4.8  ' 

087 

£8  W 

5.0 

94 


6202 


Herculis 


Series   V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

1 

II 

Mean 

2400000+ 

Remarks 

86  July         1 

h 

15.6 

III 

e  3  e 

4.4 

4.7 

10  089 

£  7  w 

4.9 

5 

16.4 

II 

£4c 

4.6 

4.8 

093 

£  8  W 

5.0 

Aug.      22 

16.1 

II 

£  5  C 

4.8 

4.9 

141 

£  8  W 

5.0 

Oct.          1 

14.6 

I 

£  3  C 

4.4 

4.5 

181 

£  5  w 

4.6 

18 

14.7 

II 

£  6  C 

5.0 

5.0 

198 

£  8  w 

5.0 

6758  /3  Lyrae  SERIES  V. 

(1900)   18h  46m  23s     (-t-2'.21);     +  33°  14'.8     (+0.07) 

Period  :  12*  21h  47m  238.72  +  ;     Variation  :  3M.4— 4M.5. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

r 

23 

+32°3286 

0.0 

3.3 

d 

}   20 
1    21 

+36°3307  \ 
+  36°3319  ( 

3.0 

J         5.6 
1         4.5 

f 

17 

+37°3223 

4.3 

4.2&5.S 

Notes  : 

The  last  two  columns  of  the  above  table  show  the  advantage  of  establishing  a  scale  for  the  comparison  stars 
from  the  observations  themselves,  independently  of  photometric  measures  made  by  other  observers  and  by  other 
means.  A  computation  of  the  combined  effect  of  two  component  stars  would  bring  a  new  element  of  uncertainty 
into  the  direct  estimates  of  the  observer. 


6758 


Lyrfe 


Series  V. 


95 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

11 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Sept.      11 

15.2 

I 

r  2  C 

0.9 

0.9 

09  431 

r  3  8 

0.9 

13 

14.8 

III 

T  2 

0.9 

0.9 

433 

Y  3 

0.9 

17 

15.3 

I 

r  1 

0.4 

0.5 

437 

Y  2 

0.6 

24 

15.4 

I 

Y  2 

0.9 

0.9 

444 

r  3 

0.9 

Oct.        10 

15.1 

I 

r  2 

0.9 

0.9 

460 

r  3 

0.9 

- 

12 

15.5 

I 

Y  3 

1.3 

1.3 

462 

r  4 

1.2 

16 

15.2 

II 

Y  2 

0.9 

0.9 

466 

Y  3 

0.9 

Nov.        7 

15.3 

I 

r2 

0.9 

0.9 

488 

FG. 

y.S'l 

0.9 

18 

14.5 

I 

Y  2  £ 

0.9 

0.9 

499 

?-3  '5 

0.9 

Dec.         9 

14.7 

II 

r  3  £ 

1.3 

1.3 

520 

y4tf 

1.2 

85  May         3 

16.1 

II 

ri: 

0.4 

0.5 

665 

I  G. 

Y  2  '5 

0.6 

' 

8 

15.8 

I 

r3c 

1.3 

1.3 

670 

' 

r  4  <5 

1.2 

1 

13 

16.4 

III 

Y  3  C 

1.3 

1.3 

675 

1 

r  4  '5 

1.2 

i 

June        4 

15.3 

I 

y  9  ^ 

/   £  » 

0.9 

0.9 

697 

r  3  ^ 

0.9 

8 

15.6 

I 

r  3  r 

1.3 

1.4 

701 

•/  5  # 

1.5 

15 

15.2 

III 

r  3  c 

1.3 

1.3 

708 

y  4  5 

1.2 

17 

15.4 

D 

r  2  : 

0.9 

0.9 

710 

r  3  * 

0.9 

29 

15.7 

D 

r2£ 

0.9 

0.9 

722 

"Y    o     •> 

0.9 

30 

15.7 

HID 

r  3  c 

1.3 

1.3 

723 

r  4  '5 

1.2 

July         2 

15.3 

I 

r  3  : 

1.3 

1.3 

725 

r  4  8 

1.2 

6 

15.7 

in 

Y   O   ^ 

1       Ll    -s 

0.9 

0.9 

729 

r  3  * 

0.9 

Aug.        3 

15.9 

II 

r  3  c 

1.8 

1.3 

757 

r  4  * 

1.2 

14 

16.4 

II 

r  2  : 

0.9 

0.9 

768 

r3£ 

0.9 

Sept.      14 

14.3 

II  D 

ri  : 

0.4 

0.5 

799 

Y  2  '5 

0.6 

Oct.          1 

15.0 

II 

r-2  : 

0.9 

0.9 

816 

r35 

0.9 

6758 


/9  Lyras 


Series  V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  Oct.          5 

h 

15.1 

I 

rl  : 

0.4 

0.7 

09  820 

f  3  3 

0.9 

9 

15.2 

I 

r  1  * 

0.4 

0.5 

824 

r  2  8 

0.6 

Nov.        9 

14.8 

I 

r  3  £ 

1.3 

2.0 

855 

r  2  8 

0.6 

Dec.         6 

14.9 

I 

r  3  ' 

1.3 

2.0 

09  882 

r18 

0.6 

86  April     27 

15.3 

II 

ro: 

0.0 

0.2 

10  024 

FG. 

rl8 

0.3 

"    . 

May         1 

15.7 

II 

r  0.5  : 

0.2 

0.3 

028 

u 

r  1  s 

0.3 

u 

6 

15.2 

III 

r  0  : 

0.0 

0.2 

033 

r  l  <5 

0.3 

11 

15.3 

D 

rl  : 

0.4 

0.4 

038 

FG. 

*r\8 

0.3 

u 

18 

15.2 

ID 

rl  : 

0.4 

0.5 

045 

a 

rid 

0.6 

"• 

27 

15.3 

I 

rl  : 

0.4 

0.5 

054 

r  2  3 

0.6 

June        2 

15.4 

I 

rl  : 

0.4 

0.5 

060 

rid 

0.6 

17 

15.4 

1  ])!> 

r  2  : 

0.9 

0.9 

075 

r  3  8 

0.9 

29 

15.6 

I 

r  2  : 

0.9 

0.9 

087 

r  3  8 

0.9 

July         1 

15.5 

in 

r  2  : 

0.9 

0.9 

089 

r3* 

0.9 

5 

16.2 

II 

r  4  c 

1.7 

1.6 

093 

r  5  8 

1.5 

26 

16.0 

II 

r3  r 

1.3 

1.2 

114 

r  4  £ 

1.2 

Aug.      22 

15.5 

II 

r  3  c 

1.3 

1.3 

141 

r  4  ^ 

1.2 

Oct.          1 

14.6 

I 

rl'-c 

0.4 

0.4 

181 

r  1  s 

0.3 

16 

14.6 

Hi]) 

r  2  C 

0.9 

0.6 

196 

r  1  ^ 

0.3 

18 

14.6 

II 

r  4  £ 

1.7 

1.5 

198 

y  4  ^ 

1.2 

29 

14.7 

I 

y  3  ? 

1.3 

1.1 

209 

v  3  5 

0.9 

Nov.       25 

13.5 

II 

r  ^  » 

2.1 

2.0 

236 

^  6  '? 

1.8 

Dec.       15 

14.1 

I 

r  2  : 

0.9 

0.9 

256 

r3' 

0.9 

87  Apr.       18 


METHOD  BY  STEPS: 


16.0 


II 


r  1 ,9  2.5  3 


0.7 
(2.3) 


0.9 


1.1 


380 


F  G. 


6758 


/9  Lyrse 


Series   V. 


97 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000  + 

Remarks 

87  Apr.       20 

h 

15.5 

I 

7-2,93: 

1.7 

1.7 

1.3 

10  382 

FG. 

/?  2.5  8 

0.5 

a 

25 

15.8 

I 

Y  i  ?  3  : 

1.1 

1.1 

1.1 

387 

$28 

1.0 

May       10 

14.7 

I 

r2/?2r 

2.1 

2.1 

2.1 

402 

ft.  1  9 

2.0 

15 

15.5 

II 

r  0.5  /?  1.5  3 

1.0 

0.7 

1.3 

407 

02: 

2.3 

18 

16.2 

I 

r  2  ft  1  d 

2.0 

2.0 

2.4 

410 

ft  i  : 

3.3 

June      14 

15.3 

II 

r  2/?2<* 

1.5 

1.5 

1.8 

437 

^ 

/52  : 

2.3 

16 

15.3 

II 

r  0.5  /3  2  <j 

0.7 

0.6 

0.9 

,  439 

/js: 

1.3 

19 

15.5 

II 

r  2.5  /?  0  <? 

2.7 

3.3 

442 

/jo.5  : 

3.8 

23 

15.2 

II 

r  1  i  •  $  ••  * 

0.5 

0.7 

0.7 

444 

/5  3.5  c 

0.8 

July         6 

16.4 

D 

r  1  /3  3  8 

0.5 

0.7 

0.5 

459 

ft  4  : 

0.3 

10 

15.7 

I 

r  2  /3  2  <J 

1.5 

1.5 

1.4 

463 

03  : 

1.3 

18 

16.2 

II 

r  1  /5  2^ 

1.0 

1.0 

1.1 

471 

/?3: 

1.3 

Aug.      15 

16.3 

II 

r2/33<5 

1.0 

1.2 

0.8 

499 

^4  : 

0.3 

7124  ij  Aquilae  SERIES  V. 

(1900)  19"  47m  23s  (+38.06);     +0°  44'.9     (+OM5) 

Period:  7M76381 ;     Variation:  3M.5— 4M.7 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

r 

63 

+  10°4043 

0.0 

2.8 

f 

70 

+  6°4357 

3.0 

3.8 

p 

52 

+  7°4132 

5.8 

4.5 

Notes  : 

Since  the  light  curve  of  this  star  is  well  determined,  these  observations,  although  few  in  number,  may  be  of 
use  in  supplementing  other  series. 


"124 


AguiLr 


Series   V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I           11 

Mean 

2400000  + 

Remarks 

DECIMAL    METHOD: 

h 

86  June      29 

16.4 

I 

r  7  P 

4.1 

3.7 

10  087 

ft  1  !'- 

3.3 

July         1 

16.1 

III 

Y  6  fi 

3.5 

3.4 

089 

ft  1  /'• 

3.3 

5 

16.5 

II 

7-5  P. 

2.9 

3.1 

093 

ft  1  I1- 

3.3 

26 

16.1 

II 

r  4  !>• 

2.3 

2.3 

114 

ft  1  ;>. 

3.3 

Aug.      22 

15.6 

II 

Y  2  n 

1.2 

2.1 

141 

ft  0  P 

3.0 

Oct.          1 

14.7 

I 

rT/» 

4.1 

4.1 

181 

fi'4'e 

4.1 

16 

14.7 

III]) 

5.2 

5.1 

196 

-   * 

Tft7'l 

5.0 

29 

14.9 

I 

Y  8  />- 

4.6 

4.4 

209 

ft  4  IL 

4.1 

Nov.      25 

13.3 

II 

r3> 

1.7 

1.6 

236 

r5/s 

1.5 

METHOD  BY  STEPS: 

87  May       18 

16.8 

I 

0.  1.5  4  .1  * 

4.6 

4.7 

4.4 

410 

Y^r, 

4.0 

June      14 

15.7 

II 

Y   9  V    1     R 
I      "    V     *-    P 

2.0 

2.0 

2.3 

437 

VJ    O   /^ 

2.8 

16 

15.8 

II 

r4^j  2^ 

3.9 

3.9 

3.9 

439 

17 

16.4 

I 

y  4  rt  1.5  ,« 

4.1 

4.2 

4.2 

440 

19 

15.8 

II 

^  2  »?  4  /i 

1.9 

1.9 

1.9 

442 

23 

15.7 

II 

r  4  >j  2  /* 

3.9 

3.9 

3.9 

446 

July       10 

16.0 

I 

jr  i  5  4,  /» 

1:4 

1.2 

1.3 

463 

18 

16.4 

II 

r  2  n  4  M 

1.9 

1.9 

1.9 

471 

Aug.      15 

16.6 

II 

r  2  n  4  /£ 

1.9 

1.9 

1.9 

499 

7803  (i  Cephei  SERIES  V. 

(1900)  21"  40m  27s    (+ls.83);     +58°  19'.3     (+0'.27) 

Irregularly  periodic;     Variation:  4M?  —  6M? 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

r 

*s 

36 

+57°2475 

3.54 

3.7 

t 

40 

+65°1814 

3.62 

3.7 

£ 

38 

-f56°2741 

4.24 

4.2 

Notes  : 

The  scale  of  steps  is  in  this  case  not  deduced  from  the  observations,  but  is  simply  the  scale  of  the  PI.  P 
magnitudes  (vol.  XIV).  The  reductions  were  made  in  1889,  in  order  to  compare  these  observations  with  tin 
simultaneous  ones  of  Mr.  Gore,  published  in  the  Proceedings  of  the  Royal  Irish  Academy,  3d  Ser.,  vol.  I,  No.  I 
As  the  latter  were  reduced  to  the  H.  P.  scale,  the  former  were  reduced  to  the  same.  The.  observations  made  b\ 
the  method  of  steps  show,  however,  that  they  do  not  fit  well  into  this  scale. 


(99) 


100 


7803 


t  Cephei 


Series  V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II         Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

84  Sept.      12 

15'!  4 

I 

C3  £ 

3.75 

3.84 

09  432 

£    5   £ 

3.93 

19 

15.0 

I 

C  3  £ 

3.75     3.75 

439 

£  2£ 

3.74 

25 

15.4 

I 

C  6  £ 

3.96     3.92 

445 

I  4  £ 

3.87 

Oct.        10 

15.6 

I 

£  6  £ 

3.96 

4.10 

460 

t  10  £ 

4.24 

12 

15.8 

I 

C  5  £ 

3.89 

4.01 

462 

t  o  £ 

4.12 

16 

15.5 

II 

C  7  £ 

4.03 

4.01 

466 

£6  £ 

3.99 

Nov.        7 

15.6 

I 

C  5  £ 

3.89 

3.88 

488 

i  4  e 

3.87 

18 

14.7 

I 

C  5  £ 

3.89 

3.88 

499 

t  4e 

3.87 

Dec.         9 

14.2 

II 

C  5  £ 

3.89 

3.88 

520 

t  4e 

3.87 

17 

14.3 

III 

:9  £ 

4.17 

4.15 

528 

£8  £ 

4.12 

85  Jan.          9 

15.5 

I 

£  6  £ 

3.96 

3.92 

551 

<4fi 

3.87 

Febr.     11 

15.2 

I 

JT  7  £ 

4.03 

4.01 

584 

t  6  £ 

3.99 

Mar.         7 

14.5 

I 

C  6  £ 

3.96 

3.95 

608 

FG. 

£  5  £ 

3.93 

(• 

9 

15.1 

II 

:  5  £ 

3.89 

3.88 

610 

a 

t  4e 

3.87 

tt 

Apr.         3 

14.7 

I 

£  O  £ 

3.89 

3.88 

635 

« 

£  4  £ 

3.87 

H 

10 

14.8 

II 

C  6  £ 

3.96 

3.95 

642 

11 

£  5  e 

3.93 

(( 

May         3 

16.2 

II 

C  7  £ 

4.03 

4.01 

665 

(I 

£  6  £ 

3.99 

11 

9 

15.4 

II 

C  3  £ 

3.75 

3.75 

671 

u 

£   2  £ 

3.74 

tt 

13 

16.3 

III 

:  Q  £ 

3.96 

3.95 

675 

tt 

£    5    £ 

3.93 

11 

June        4 

16.2 

I 

C  4  £ 

3.82 

3.82 

697 

u 

£    3    £ 

3.81 

a 

15 

15.6 

III 

C5  £ 

3.89 

3.88 

708 

it 

£   4   £ 

3.87 

17 

15.7 

]) 

r  3  £ 

3.75 

3.75 

710 

£2£ 

3.74 

July         2 

15.8 

I 

C  2  £ 

3.68 

3.68 

725 

£  1  £ 

3.68 

6 

16.2 

III 

:  i  £ 

3.61 

3.62 

729 

£    0    £ 

3.62 

Aug.      14 

16.7 

II 

C  4  £ 

3.82 

3.82 

768 

£  3  £ 

3.81 

Sept.       14 

14.6 

II  }) 

C  4  £ 

3.82 

3.82 

799 

£  3  £ 

3.81 

1 

Cephei 


Series  V. 


101 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

85  Oct.          1 

h 

15.3 

I 

C4£ 

3.82 

3.82 

09  816 

t  3  e 

3.81 

5 

15.5 

I 

C  2  £ 

3.68 

3.68 

820 

<  1  £ 

3.68 

9 

15.7 

I 

C  3  £ 

3.75 

3.75 

824 

t  2£ 

3.74 

Nov.        9 

15.1 

I 

C3  £ 

3.75 

3.75 

855 

t  2  £ 

3.74 

Dec.         6 

15.5 

I 

C  2  £ 

3.68 

3.68 

882 

t   1  £ 

3.68 

11 

15.8 

I 

C  3  £ 

3.75 

3.75 

887 

t  2£ 

3.74 

86  Jan.         6 

15.9 

III 

C6e 

3.96 

3.95 

913 

FG. 

t  5  £ 

3.93 

11 

9 

15.6 

I 

C6£ 

3.96 

3.95 

916 

£   5   £ 

3.93 

Febr.       1 

15.5 

I 

C  3  £ 

3.75 

3.75 

939 

<  2£ 

3.74 

8 

15.3 

III 

C  8  £ 

4.10 

4.08 

946 

<  7£ 

4.05 

22 

15.1 

II 

C  3  £ 

3.75 

3.75 

960 

t  2£ 

3.74 

Mar.         2 

15.8 

I 

C  5  £ 

3.89 

3.88 

968 

<4£ 

3.87 

6 

15.3 

I 

C  3  e 

3.75 

3.75 

972 

<  2£ 

3.74 

21 

15.4 

ID 

C  2£ 

3.68 

3.68 

987 

- 

<•  1  £ 

3.68 

Apr.         2 

15.6 

i 

C  4s 

3.82 

3.88 

09  999 

F  G.,  Low. 

t  5  £ 

3.93 

" 

6 

15.9 

i 

C  4  £ 

3.82 

3.82 

10  003 

" 

i  3  e 

3.81 

" 

27 

14.9 

ii 

f       Q      £ 

4.17 

4.15 

024 

u 

£  8  € 

4.12 

u 

May         1 

15.9 

ii 

C  7  £ 

4.03 

4.01 

028 

u 

£  6  £ 

3.99 

it 

6 

15.7 

in 

C  9  £ 

4.17 

4.15 

033 

a 

tSs 

4.12 

u  ' 

18 

15.8 

ID 

C  5  £ 

3.89 

3.88 

045 

it 

£   4   £ 

3.87 

u 

27 

15.7 

i 

:  9e 

4.17 

4.15 

054 

FG. 

t  8  £ 

4.12 

" 

29 

15.9 

in 

£  3  £ 

3.75 

3.75 

056 

a 

f  2  e 

3.74 

June        2 

15.8 

i 

C  7  £ 

4.03 

4.01 

060 

t-  6  £ 

3.99 

17 

15.7 

i 

C9  £ 

4.17 

4.15 

075 

FG. 

£8  £ 

4.12 

u 

29 

15.8 

i 

C  9  £ 

4.17 

4.15 

087 

• 

tS  £ 

4.12 

July         1 

15.9 

in 

C  6  £ 

3.96 

3.95 

089 

£  5  £ 

3.93 

5 

16.6 

u 

C  10  e 

4.24 

4.21 

093 

£  9  £ 

4.18 

7803 


CepJtei 


Series   V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  Aug.      22 

h 

15.8 

It 

MO* 

4.24 

4.24 

10  141 

ao* 

4.24 

Oct.          1 

15.1 

I 

C5e 

3.89 

3.88 

181 

<4e 

3.87 

18 

14.8 

II 

ra> 

4.10 

4.08 

198 

t  7 

4.05 

29 

15.2 

I 

:s 

3.75 

3.75 

209 

t2- 

3.74 

Nov.      25 

13.7 

II 

C8 

4.10 

4.08 

236 

t  7 

4.05 

Dec.       15 

14.5 

I 

C4e 

3.82 

3.88 

256 

<5e 

3.93 

29 

14.1 

I 

C9* 

4.17 

4.15 

270 

t  8*      . 

4.12 

87  Jan.        14 

15.3 

I 

C8  e 

4.10 

4.08 

286 

c7« 

4.05 

METHOD  BY  STEPS 


Jan.       28 

12.3 

C4/*6e 

2.89 

3.82 

3.36 

300 

Feb.       12 

14.9 

I 

C  3  P-  7  e 

1.89 

3.75 

2.82 

315 

16 

15.3 

II 

:  2/1  5  = 

2.39 

3.74 

3.07 

319 

Mar.       13 

14.9 

II 

C4/i2-« 

4.89 

4.04 

4.47 

344 

17 

14.6 

I 

:  i  /^  3  £ 

2.89 

3.71 

3.30 

348 

24 

15.9 

II 

C  1  ,«  3  £ 

2.89 

3.71 

3.30 

355 

28 

15.3 

II 

C  1  /*  4  f 

2.39 

3.68 

3.04 

359 

Apr.       18 

15.6 

II 

:  1^3e 

2.89 

3.71 

3.30 

380 

20 

15.3 

I 

C  2  /*  2  e 

3.89 

3.89 

3.89 

382 

25 

16.0 

I 

Cl/i3e 

2.89 

3.71 

3.30 

387 

May       15 

15.8 

II 

C  1  /;-  1  e 

3.89 

3.89 

3.89 

407 

19 

15.9 

II 

C  1  A*  3  e 

2.89 

3.71 

3.30 

411 

June      14 

15.9 

II 

C  1  ,u  3  e 

2.89 

3.71 

3.30 

437 

17 

16.5 

I 

C.  1  A  2  « 

3.39 

3.77 

3.58 

440 

23 

15.6 

I 

:  2  /*  2  e 

3.89 

3.71 

3.80 

446 

July        6 

16.7 

D 

C  2  At  2.5  £ 

3.64 

3.94 

3.79 

459 

10 

16.2 

I 

C  2  /£  3  £ 

3.39 

3.84 

3.62 

463 

Aug.      15 

16.8 

II 

C  2  /a  2  £ 

3.89 

3.89 

3.89 

499 

FG. 


8073  6  Cephei  SERIES  V. 

(1900)  22"  25"  27s  (+28.22);     -f  57°  54'.2  (+0'.31) 

Period  :  5d  8h  47m  398.3  — ;     Variation  :  3M.7— 4M.9. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

*• 

36 

+  57°2475 

0.0 

3.7 

£ 

40 

65°1814 

0.8 

3.7 

£ 

38 

56°2741 

4.6 

4.2 

f 

35 

+  63°1802 

5.7 

4.4 

Notes : 

Owing  to  its  short  period,  this  star  would  require  more  systematic  observations.     The  accurate  knowledge  of 
its  period,  however,  will  make  these  observations  useful. 


(103) 


8073 


Cephei 


Series   V. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Sept.      12 

15.3 

I 

C2;« 

0.9 

0.9 

09  432 

:io  t 

0.8 

19 

15.6 

I 

c4« 

1.8 

1.7 

439 

t2« 

1.6 

25 

15.3 

I 

:7  s 

3.2 

3.0 

445 

i'5« 

2.7 

Oct.        10 

15.5 

I 

C5< 

2.3 

3.3 

460 

t  9  £ 

4.2 

12 

15.8 

I 

:6* 

2.8 

3.5 

462 

t  9  = 

4.2 

16 

15.5 

II 

:6e 

2.8 

2.8 

466 

t  5e 

2.7 

Nov.        7 

15.6 

I 

:6  *- 

2.8 

2.8 

488 

t5  s 

2.7 

18 

14.6 

I 

:7c- 

3.2 

3.2 

499 

f  6e 

3.1 

Dec.         9 

14.2 

II 

C7e 

3.2 

3.2 

520 

t6« 

3.1 

•-* 

17 

14.3 

III 

C8  e 

3.7 

3.6 

528 

<7£ 

3.5 

85  Jan.         9 

15.4 

I 

C8  s 

3.7 

4.0 

551 

<  9e 

4.2 

Febr.      11 

15.1 

I 

rio« 

4.6 

4.4 

584 

^  9c- 

4.2 

Mar.         7 

14.4 

I 

C9s 

4.1 

4.4 

608 

FG. 

«  10  e 

4.6 

a 

9 

15.0 

II 

C6  s 

2.8 

3.2 

610 

(t 

i  7  e 

3.5 

<( 

Apr.         3 

14.6 

I 

C8« 

3.7 

4.0 

635 

u 

t9« 

4.2 

M 

10 

14.6 

II 

C8e 

3.7 

4.0 

642 

U 

«  9  e 

4.2 

U 

May         3 

16.2 

11 

C7e 

3.2 

3.2 

665 

U 

r6£ 

3.1 

a 

9 

15.3 

II 

:  10  e 

4.6 

4.2 

671 

it 

e8e 

3.8 

« 

13 

16.1 

III 

C6« 

2.8 

2.8 

675 

u 

t'5'« 

2.7 

i< 

June        4 

16.1 

I 

C7e 

3.2 

3.2 

697 

u 

^6c- 

3.1 

H 

15 

15.6 

III 

C8.t 

2.8 

2.8 

708 

(I 

f    5    £ 

2.7 

17 

15.7 

D 

C3e 

1.4 

1.5 

710 

t2e 

1.6 

July         2 

15.8 

i 

C4e 

1.8 

1.9 

725 

^3  e 

1.9 

6 

16.1 

in 

C3e 

1.4 

1.5 

729 

t  2^ 

1.6 

Aug.      14 

16.7 

ii 

C5e 

2.3 

2.3 

768 

<4e 

2.3 

Sept.      14 

14.6 

n  D 

C5e 

2.3 

2.3 

799 

£4e 

2.3 

8073 


d  Cephei 


Series  V. 


105 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

So  Oct.          1 

h 

15.3 

11 

C  5  e 

2.3 

2.3 

09  816 

t  4  s 

2.3 

5 

15.5 

I 

C4« 

1.8 

1.9 

820 

'.  3  e 

1.9 

9 

15.7 

I 

C3* 

1.4 

1.5 

824 

.'2  e 

1.6 

Nov.        9 

15.1 

I 

:  i  e 

0.5 

0.7 

855 

tQ* 

0.8 

Dec.         6 

15.5 

1 

:i  e 

0.5 

0.7 

882 

:0e 

0.8 

11 

15.7 

I 

C2f 

0.9 

1.1 

887 

t  1  e 

1.2 

86  Jan.          6 

15.9 

III 

C8  e 

3.7 

3.6 

913 

FG. 

.«  7  £ 

3.5 

u 

9 

15.5 

I 

:8« 

3.7 

3.4 

916 

£    6£ 

3.1 

Feb.         1 

15.4 

I 

:  10  s 

4.6 

4.6 

939 

^  10  £ 

4.6 

8 

15.3 

III-IV 

:  2£ 

0.9 

1.1 

946 

FG. 

<  i  e 

1.2 

u 

22 

15.0 

II 

C5I 

2.8 

2.8 

960 

>. 

<4£ 

2.8 

Mar.         2 

15.8 

I 

:3* 

1.4 

1.5 

968 

»2t 

1.6 

6 

15.3 

I 

:  10  e 

4.6 

4.4 

972 

<9e 

4.2 

21 

15.3 

I]) 

C8  e 

3.7 

4.0 

987 

FG. 

t  9^ 

4.2 

Apr.         2 

15.4 

I 

C9e 

4.1 

4.3 

09  999 

Low 

«  9.5  s 

4.4 

6 

15.8 

I 

rio« 

4.6 

4.4 

10  003 

u 

«  9s 

4.2 

C8  ,- 

4.6 

t.TI 

4.2 

27 

14.9 

II 

C8c 

4.6 

4.4 

024 

«  7? 

4.2 

May         1 

15.9 

II 

C8s 

3.7 

3.6 

028 

^7e 

3.5 

6 

15.6 

III 

C4s 

1.8 

1.9 

033 

:3s 

1.9 

18 

15.8 

ID 

5T9« 

4.1 

4.0 

045 

(8< 

3.8 

27 

15.6 

I 

r'2« 

0.9 

1.1 

054 

f   1   £ 

1.2 

29 

15.9 

III 

C8  £ 

3.7 

3.6 

056 

!    7    S 

3.5 

June        2 

15.8 

I 

ant* 

1.8 

1.9 

060 

^3e 

1.9 

17 

15.7 

1  3)3) 

:i  s 

0.5 

0.7 

075 

t  Oe 

0.8 

29 

15.8 

i 

C2e 

0.9 

1.1 

087 

«  1  e 

1.2 

• 

8073 


8  CepJiei 


Series   V. 


]SOO+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

86  July         1 

h 

15.8 

III 

£4; 

1.8 

1.9 

10  089 

Smoke. 

'  3  £ 

1.9 

5 

16.6 

II 

:2£ 

0.9 

1.1 

093 

£  1  £ 

1.2 

Aug.      22 

15.8 

II 

C  2e 

0.9 

1.1 

141 

C  J  e 

1.2 

Oct.          1 

14.8 

I 

C4e 

1.8 

1.9 

181 

<  3c 

1.9 

18 

14.7 

II 

C4e 

1.8 

1.9 

198 

*) 

<2e 

1.9 

29 

15.1 

I 

C  1  £ 

0.5 

0.7 

209 

t  0  £ 

0.8 

Nov.      25 

13.7 

II 

C2« 

0.9 

1.1 

236 

i  1  £ 

1.2 

Dec.       15 

14.5 

I 

:  10  £ 

4.6 

4.6 

256 

t  10  e 

4.6 

29 

14.4 

I 

C9e 

4.1 

4.0 

270 

<8c- 

3.8 

87  Jan.        14 

15.3 

I 

:  9e 

4.1 

4.4 

286 

« 

<  10  e 

4.6 

METHOD  BY  STEPS 


Jan.       28 

12.2 

II 

C  3  d  6  £ 

0.8 

1.5 

1.2 

300 

Febr.     12 

14.8 

I 

C7  <50e 

5.8 

5.8 

315 

16 

15.2 

II 

C5  die 

4.3 

3.8 

4.1 

319 

Mar.       13 

14.8 

II 

C3<J2e        . 

2.8 

2.8 

2.8 

344 

17 

14.5 

I 

C  3  3  1  e 

3.3 

'    3.4 

3.4 

348 

24 

15.9 

II 

C2<J3£ 

1.8 

1.8 

1.8 

355 

28 

15.3 

II 

C  2  d  3  e 

1.8 

1.8 

1.8 

359 

Apr.       18 

15.6 

II 

C  2  d  2  e 

2.3 

2.3 

2.3 

380 

20 

15.3 

I 

Z  3<J2e 

2.8 

2.8 

2.8 

382 

25 

16.0 

I 

C3<?2e 

2.8 

2.8 

2.8 

387 

May       15 

15.8 

II 

cial« 

2.3 

2.3 

2.3 

407 

19 

15.9 

II 

C  2  8  2  e 

2.3 

2.3 

2.3 

411 

June      14 

15.8 

II 

»  2(5  2e 

2.3 

2.3 

2.3 

437 

17 

16.5 

I 

•  C  0.5  <*  3  e 

1.0 

0.7 

0.9 

440 

23 

15.5 

II 

r  1  <*3e 

1.3 

1.1 

1.2 

446 

Julv         6 

16.6 

D 

rs  •  *  1  « 

3.3 

3.4 

3.4 

459 

10 

16.1 

I 

C  2<53e 

1.8 

1.8 

1.8 

463 

Aug.      15 

16.8 

II 

CO<S4e 

0.3 

0.3 

499 

FG. 


*)  The  original  had  e  2  C,  e  4  <,  corrected  into  C  2  e,  t  4  e.     The  reading  given  above  is  more  probable. 


(5274)  (W)  Bootis  SUSP.  VAR. 

(1900)  14h  39"  28    (+2'.64);     +26°  57'.2  (— 0'.26) 

Variation:  5M  — 6M? 

Comparison  Stars : 


Obs. 

A8V. 

BD. 

Steps 

Magn. 

P 

-l-3102628 

0.0 

3.6  HP. 

a 

+30°2536 

2.0 

4.5     " 

C 

+  27°2388 

6.1 

5.9    " 

Notes : 

This  star  was  considered  variable  by  Schmidt  in  1867,  but  was  not  entered  in  Schonfeld's  Catalogue  II  (1875). 
It  is  in  all  three  of  Chandler's  catalogues  under  the  designation  W  Bootis,  with  the  number  5274.  In  the 
Potsdam  Photometric  Durchmusterung  II  (Bd.  13,  1899,  Note  to  No.  2517),  however,  the  star  is  pronounced :  not 
variable.  The  following  observations  may  serve  to  confirm  this  judgment.  The  letter  c  for  the  third  comparison 
star  is  not  Bayer's. 


(107) 


[5274] 


( W)  Bootis 


Susp.  Far. 


1800+ 

'Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Sept.        9 

55.5 

I 

P7  c 

4.3 

4.0 

09  429 

F  G.  used  throughout. 

ff  4  c 

3.6 

13 

14.3 

III 

/>8c 

4.9 

4.5 

433 

A 

ff  5  c 

4.1 

17 

14.1 

I 

p  6  c 

3.7 

3.5 

437 

ff  3  c 

3.2 

20 

14.5 

I 

p  7  c 

4.3 

3.8 

440 

ff  3c 

3.2 

85  May         3 

15.2 

II 

/>  7  c 

4.3 

3.8 

665 

ff  3c 

3.2 

8 

15.2 

I 

f>Qc 

3.7 

3.7 

670 

ff  4  c 

3.6 

June      18 

15.6 

D 

pl  c 

4.3 

3.6 

711 

ff  2c 

2.8 

July         2 

15.6 

I 

P  9c? 

(0.5) 

(4.8) 

725 

N.  E.  obs.  doubtful. 

50 
\j    » 

(4.1) 

6 

15.9 

III 

/>9c 

5.5 

4.6 

729 

ff4c 

3.6 

Sept.      14 

15.4 

n  D 

P  8c 

4.9 

4.3 

09  799 

ff  4  c 

3.6 

86  Apr.         4 

15.5 

II 

^Sc 

4.9 

4.5 

10  001 

ff  5  c 

4.1 

". 

6 

15.8 

I 

p  6  c 

3.7 

3.6 

003 

<r  3.5  C 

3.4 

27 

14.8 

n 

P7e 

4.3 

4.2 

024 

<T  5  c 

4.1 

May         1 

15.5 

II 

P7  c 

4.3 

3.8 

028 

ff  3  c 

3.2 

6 

14.9 

in 

p  8  c 

4.9 

4.3 

033 

ff  4  c 

3.6 

11 

15.5 

I  3)3) 

P  5  c 

3.1 

2.8 

.038 

ff  1  C 

2.4 

18 

15.5 

DDD 

/>63 

3.7 

3.3 

045 

ff  2c 

2.8 

27 

15.3 

I 

p  8  c 

4.9 

4.3 

054 

ff  4  c 

3.6 

June        2 

15.6 

I 

i?8c 

4.9 

4.5 

060 

ff  5c 

4.1 

17 

15.3 

I  3)3) 

P  7  c 

4.3 

3.8 

075 

ff  3c 

3.2 

'-    v 

METHOD  BY  STEPS: 

87  Mar.       17 

14.9 

I 

P  6  W  2  c 

5.0 

4.6 

4.7 

348 

ff  3  W  2  c 

4.5 

4.5 

21 

14.8 

II 

p  4  \V  4-  c 

3.0 

3.0 

3.1 

352 

ff2  W  4c 

3.0 

3.4 

[5274] 


(W)  Bootis 


Susp.  Var. 


109 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

87  Mar.       24 

n 

16.0 

II 

P  3  W  4  c 

2.5 

2.6 

2.6 

10  355 

<*  1  W  4  c 

2.5 

2.8 

28 

15.4 

II 

p  4  W  3  c 

3.5 

3.5 

3.5 

359 

*  2  W  3  c 

3.5 

3.6 

Apr.       18 

15.5 

II 

P  3  W  2  c 

3.5 

3.6 

3.5 

380 

«  1  W  2  c 

3.5 

3.4 

20 

15.2 

I 

P  3  W  1  c 

4.0 

4.6 

4.2 

382 

«  1  W  1  c 

4.0 

-      4.0 

25 

15.7 

I 

p  3  W  3  c 

3.0 

3.0 

3.0 

387 

«•  1  W  3  c 

3.0 

3.0 

May       10 

14.9 

I 

p  3  W  2  c 

3.5 

3.6 

3.5 

402 

«1  W2c 

3.5 

3.4 

15 

15.4 

II 

P  4  W  2  c 

4.0 

4.1 

4.0 

.    407 

<* 

*  2  W  2  c 

4.0 

4.0 

18 

16.4 

I 

/>3  W  2c 

3.5 

3.6 

3.5 

410 

«•  1  W  2  c 

3.5 

3.4 

June      14 

15.4 

II 

/>  4  W  3  c 

3.5 

3.5 

3.5 

437 

*  2  W  3  c 

3.5 

3.6 

16 

15.4 

II 

p  4  W  2  c 

4.0 

4.1 

4.0 

439 

*2W2c 

4.0 

4.0 

19 

15.5 

II 

P  4  W  2  c 

4.0 

4.1 

3.9 

442 

V 

*  1.5  W  2  c 

3.8 

3.8 

23 

15.3 

II 

P  3  W  2  c 

3.5 

3.6 

3.5 

446 

«•  1  W  2  c 

3.5 

3.4 

July       10 

15.7 

I 

/>  4  W  1  c 

4.5 

4.9 

4.7 

463 

T  2  W  1  c 

4.5 

4.7 

3-  Serpentis 

(1900)  18h  51m  15s     (+28.98);     +4°  4'.0     (+0'.08) 

Relative  brightness  0.4  — 1.4  ? 

Comparison  Stars: 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

f 

63 

+  10°4043 

0.0 

2.8 

P 

70 

+  6°4357 

2.0 

3.8 

ft 

52 

+  7°4132 

4.2 

4.5 

Notes  : 

The  numbers  of  the  column  ASV.  refer  to  the  chart  of  ^  Aquilse  (Ser.  V,  Charta  XIV),  as  the  comparison  stars 
of  $  Serpentis  and  57  Aquilse  are  the  same.  The  star  is  double,  and  the  relative  brightness  of  the  two  components  is 
suspected  of  variability  (See  Potsdam  Photom.  Durchmusterung  I,  p.  482,  Note  to  2610-11).  In  the  following 
observations  the  two  components  were  estimated  as  one  star. 


Serpent-is 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I             II         Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

86  June      29 

16.4 

I 

r  5  P. 

2.1 

2.1 

10  087 

r  10/5 

2.0 

July         1 

16.2 

III 

r  4  ,«  ? 

1.7 

1.8 

089 

Y  9  p  ? 

1.8 

5 

16.5 

II 

r  3  ^ 

1.3 

1.7 

093 

0  0  P 

2.0 

26 

16.2 

II 

r  7  p 

2.9 

2.9 

114 

?4t* 

2.9 

Aug.      22 

15.7 

II 

Y  6  P- 

2.5 

2.5 

141 

/?  2  At 

2.4 

Oct.          1 

14.7 

I 

r  4  P. 

1.7 

2.1 

181 

13  2  At 

2.4 

16 

14.7 

HID 

r  5  P 

2.1 

2.3 

196 

?  2  ,« 

2.4 

29 

14.9 

i 

Y  3  At 

1.3 

1.5 

209 

r  8  ft 

1.6 

Nov.      25 

13.4 

ii 

r  4  At 

1.7 

1.5 

236 

r.60 

1.2 

METHOD  BY  STEPS: 

87  May       18 

16.7 

i 

r  3  >'/  2  At 

2.6 

2.5 

2.4 

410 

/?  0  * 

2.0 

June      14 

15.8 

ii 

r  1  *  2.5  At 

1.3 

1.2 

1.5 

437 

*  0  /? 

2.0 

16 

15.8 

ii 

r  3  *  3  At 

2.1 

2.1 

2.7 

439 

/3  2  * 

4.0 

17 

16.4 

i 

r  3  #  2  At 

2.6 

2.5 

2.7 

440 

/3  1  $ 

3.0 

23 

15.7 

ii 

r  3  'V  3  ,u 

2.1 

2.1 

2.1 

446 

<r#* 

2.0 

July       10 

16.1 

i 

r  3  *  2  At 

2.6 

2.5 

2.7 

463 

/?  1  # 

3.0 

18 

16.5 

ii 

r  3  *  5  At 

1.1 

1.6 

1.1 

471 

''>  1.5  /5 

0.5 

Aug.      15 

16.7 

ii 

r  4  ''/  2  p- 

3.1 

2.8 

3.0 

499 

,5i*' 

3.0 

, 

(7285)  PCygni  NOVA? 

(1900)  20h  14m  6s    (^2S.21);     +37°  43'.3     (+OM8) 

Magnitude:  PD.=5M.0,  HP.=4M.9. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

b2 

31 

+36°3907 

0.0 

4.8 

b3 

34 

-f-36°3955 

1.0 

5.1 

c 

37 

+36°3998 

3.0 

5.5 

Notes  : 

Although  no  variations  have  been  established  in  the  brightness  of  this  star  for  the  last  two  hundred  years,  it 
is  in  all  the  catalogues  of  Scheu  field  and  Chandler,  because  it  was  subject  to  considerable  fluctuations  in  the  seven- 
teenth century.  The  following  observations  may  be  of  use  to  future  discussions  of  its  variability.  The  numbers 
in  the  column  ASV.  refer  to  Charta  XV,  Series  V. 


(ill) 


[7285] 


P  Cygni 


Nova  f 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

DECIMAL  METHOD: 

h 

84  Sept.      11 

15.5 

I 

b25c 

1.5 

1.3 

09  431 

F  G.  used  throughout. 

b2  10  b3 

1.0 

13 

14.7 

III 

ba  7  c 

2.1 

2.1 

433 

b3  5  c 

2.0 

17 

15.6 

I 

ba  5  c 

1.5 

2.0 

437 

b3  7c 

2.4 

24 

15.7 

I 

b8  7  c 

2.1 

2.0 

444 

b39  c 

1.8 

Oct.       10 

15.3 

I 

b=7  c 

2.1 

1.5 

460 

b29b3 

0.9 

12 

15.6 

I 

b2  4  c 

1.2 

1.0 

462 

ba8b3 

0.8 

16 

15.4 

II 

ba5c 

1.5 

1.9 

466 

b36c 

2.2 

Nov.        7 

15.4 

I 

b25c 

1.5 

1.7 

488 

• 

b34c 

1.8 

18 

15.0 

I 

b2  6  c 

1.8 

1.9 

499 

b35c 

2.0 

Dec.  .      9 

14.7 

II 

b27c 

2.1 

2.2 

520 

b36  c 

2,2 

18 

15.0- 

I 

b2  9c 

2.7 

2.7 

529 

b38c 

2.6 

85  Jan.          9 

14.4 

I 

b28c 

2.4 

2.4 

551 

b3  7c 

2.4 

June        4 

15.9 

I 

b22c 

0.6 

1.1 

697 

b33c 

1.6 

8 

16.0 

I 

b20c 

0.0 

0.6 

701 

b3  1  c 

1.2 

15 

15.7 

III 

b20c 

0.0 

0.6 

708 

b3!  c 

1.2 

17 

15.6 

D 

bMc 

0.3 

0.9 

710 

b32c 

1.4 

July         6 

16.1 

III 

b2  2c? 

0.6 

1.1 

729 

b33c? 

1.6 

Sept.      14 

15.6 

n  D 

b25c 

1.5 

1.7 

799 

b34c 

1.8 

Oct.          1 

15.2 

II 

b2  5  c 

1.5 

1.6 

816 

b33c 

1.6 

5 

15.3 

I 

b24c 

1.2 

1.4 

820 

b33c 

1.6 

9 

15.6 

I 

b24c 

1.2 

1.3 

824 

b3  2c 

1.4 

Nov.         9 

15.0 

I 

b24c 

1.2 

1.3 

855 

b32c 

1.4 

Dec.         6 

15.0 

I 

b26c 

1.8 

1.8 

882 

b3  4  c 

1.8 

11 

15.2 

I 

b25c 

1.5 

1.7 

09  887 

b34c 

1.8 

[7285] 


P  Cygni 


Nova  ? 


113 


18004- 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

80  May       18 

15  !'9 

IJ 

Ir  2  c 

0.6 

0.9 

10  045 

b3!  c 

1.2 

27 

15.8 

ID 

\>'2  3  c 

0.9 

1.2 

054 

b32c 

1.4 

29 

15.8 

in 

b24c 

1.2 

1.6 

056 

b35c 

2.0 

June        3 

15.4 

I 

b*3c 

0.9 

1.4 

061 

b34c 

1.8 

17 

15.4 

I])]) 

b2!  c 

0.3 

0.9 

075 

!/      .. 

b32c 

1.4 

Oct.          1 

14.6 

ID 

b23  c 

0.9 

1.4 

181 

b34c 

1.8 

18 

14.5 

ll 

b2!  c 

0.3 

0.9 

198 

b32c 

1.4 

29 

15.0 

I 

b22c 

0.6 

1.1 

209 

b33c 

1.6 

Nov.      25 

13.5 

II 

b2  2  c 

0.6 

1.1 

236 

b33e 

1.6 

Dec.       15 

14.1 

I 

b34c 

1.8 

1.4 

256 

b23c 

0.9 

29 

14.2 

I 

b"5c 

2.0 

1.6 

270 

b24c 

1.2 

METHOD  BY  STEPS: 


7  Jan.       28 

12.4 

II 

b22P 

300 

Apr.       25 

16.1 

I 

b2  2  P  1  c 

2.0 

2.0 

2.0 

387 

b3!  P 

2.0 

May       10 

15.4 

I 

b2  2  P  2  c 

1.5 

1.5 

1.7 

402 

b3  1  P 

2.0 

15 

16.0 

II 

b20.5P0.5c 

1.5 

1.5 

1.0 

407 

PI  b3 

0.0 

18 

16.6 

I 

b3  0  P  1  c 

1.5 

1.3 

410 

b2  1  P 

1.0 

19 

15.9 

II 

P  2  b8 

-1.0 

-0.7 

411 

PI  b2 

-1.0 

/ 

P3c 

0.0 

June      14 

15.6 

II 

b2  1  P  1  c 

1.5 

1.5 

1.3 

437 

b3OP 

1.0 

16 

15.7 

II 

b2  1  P  2  c 

1.0 

1.0 

0.7 

439 

P  1  b3 

0.0 

17 

16.3 

I 

b'0.5P1.5c 

1.0 

0.6 

0.5 

440 

PI  b3 

0.0 

19 

15.6 

II 

P  0.5  b2 

-0.5 

-0.3 

442 

P2b3 

—1.0 

P  2.5  c 

+  0.5 

23 

15.3 

II 

b2  0  P  2  c 

1.0 

0.3 

446 

Plbs 

0.0 

July       18 

16.3 

II 

b2  1  P  3  c 

0.5 

0.7 

-0.3 

471 

P  2b3 

-1.0 

i 

III.  Observations  made  by  J.  G.  Hagen,  S.  J.,  from  1888  to  1890. 

The  following  observations  were  made  at  the  Georgetown  College  Observatory,  with  a  5-inch  equatorial  by 
Troughton  &  Simms.  The  eye-piece  had  a  power  of  50  diameters,  with  a  field  of  less  than  a  degree,  rather  too 
small  for  the  purpose.  The  observing  list  consisted  almost  exclusively  of  southern  variables,  which  could  not  be 
well  observed  in  more  northern  latitudes.  Most  of  the  results  of  these  observations  were  published  at  the  time  in 
the  Astronomical  Journal. 


806  o  Ceti  SERIES  IV  &  V. 

(1900)  2"  14m  18s  (+38.03);     -3°  25'.7     (+0'.27) 

Period:  331d.6;     Variation:  2M  — 9M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magu. 

1 

—  3°340 

0.0 

[7.7]  BD. 

m 

2 

—  4°379 

6.0 

8.0 

n 

5 

—  2°396 

13.7 

8.5 

P 

6 

—  3°363 

15.8 

8.6 

r 

7 

—  3°355 

22.8 

8.8 

q 

—  3°362 

24.8 

[9.2]  BD. 

Notes  : 

In  order  to  avoid  confusion  in  the  notation,  the  variable  was  designated  by  M,  instead  of  the  Greek  letter  «.. 
These  few  observations  were  made  incidentally  in  preparing  the  two  charts  for  the  Atlas.  The  numbers  under 
ASV.  and  Magn.  (except  those  in  parenthesis)  are  taken  from  the  IV.  Series  of  the  Atlas. 


806 


o   Ceti 


/Series  IV-V. 


115 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

.  II 

Mean 

2400000+ 

Remarks 

90  Jan.        16 

h 

14.8 

I 

1  4  M  2  in 

4.0 

4.0 

4.0 

11  384 

M3  n 

(10.7) 

M5p 

(10.8) 

21 

15.5 

I 

1  5  M  4  p 

8.4 

8.8 

8.7 

389 

m2M4n,m5n 

8.8 

8.8 

22 

15.2 

I 

m  3  M  5  n 

8.9 

9.0 

9.0 

390 

23 

16 

I 

m  4  M  3  n 

10.3 

10.4 

10.4 

391 

27 

13.1 

ID 

m  4  M  5  n 

9.4 

9.4 

9.4 

395 

Feb.       10 

13.5 

in  6  M  4  n 

10.8 

10.6 

10.7 

409 

12 

13.5 

m  8  M  1  n 

13.3 

12.8 

12.6 

411 

1 

M  4  p  4  r 

11.8 

. 

»     16 

13h-15h 

in 

p  5  M  5  r 

19.3 

19.3 

19.3 

415 

18 

" 

in 

M  =  p  (') 

15.8 

15.8 

417 

Difficult. 

(M  6  r) 

(16.8) 

Mar.        6 

u 

IDDD 

p3M5r2q 

18.3 

18.4 

18.4 

433 

Difficult,  low. 

8 

u 

i 

r  2  M  1  q  (!) 

24.3 

24.1 

24.2 

435 

»<r! 

814  S  Persei  SERIES  III. 

(1900)  2h  15m  41s     (+4».27);     +  58°  7'.8     (+ 0'.28) 

Variation  :  8|M  —  12M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

g 

1 

+58°471 

0.0 

7.8 

f 

4 

+58°467 

3.3 

8.2 

e 

5 

+58°452 

4.3 

8.3 

k 

7 

+57°549 

5.3 

8.5 

b 

18 

+57°557 

14.5 

9.5 

c 

36 

19.1 

10.9 

Notes  : 

These  observations  are  a  continuation  of  those  made  from  1883  to  1888,  and  were  reduced  on  the  same  scale 
as  the  latter,  although  the  instrument  was  a  different  one. 


814 


S  Persei 


Series  III. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

90  Sept.      24 

S  =  b 

14.5 

14.5 

11  635 

• 

Oct.          3 

b  1  S  7  c 

13.8 

15.1 

14.5 

644 

5 

b  1  S4c 

15.3 

15.4 

15.4 

646 

14 

I 

b  3  S  7  c 

14.8 

15.9 

15.4 

655 

Nov.        7 

b3S7c! 

14.8 

15.9 

15.6 

11  679 

b  4  S  7  c 

15.3 

16  3 

91   Sept.      26 

I 

e3S  2k  ! 

5.3 

4.9 

5.1 

12  002 

28 

e  3  S  4  k 

4.3 

4.7 

4.5 

004 

Oct.       25 

I 

f  3S2e4k 

4.3 

3.9 

4.1 

031 

Nov.        2 

I 

f4S2e4  k 

4.8 

4.0 

4.4 

039 

20 

f4S3e 

4.3 

3.9 

4.1 

057 

29 

I 

f3S4e! 

3.3 

3.7 

3.5 

066 

Dec.         8 

I 

f2S3e 

3.3 

3.7 

3.5 

075 

18 

I 

fOS4e 

1.8 

2.5 

085 

f  1  S  4  e 

2.3 

3.5 

28 

II 

fOS3e 

2.3 

2.3 

095 

92  Jan.        15' 

I  3)3) 

f  OS4e 

1.8 

1.8 

113 

Feb.         5 

ID 

g4S3f 

2.1 

1.9 

2.0 

134 

13 

ID 

g4S3f 

2.1 

1.9 

2.0 

142 

Mar.         3 

13) 

g  4  S  3  f 

2.1 

1.9 

2.0 

161 

28 

i 

g5S  2f 

.  3.1 

2.3 

2.7 

186 

Apr.       16 

i 

goS  1  f 

3.6 

2.7 

2.9 

205 

g  5  S  4  e 

2.7 

2.4 

23 

i 

g6SOf4.5e 

3.1 

3.1 

212 

Sept.      24 

i 

k  4  S  7  b 

8.4 

8.6 

8.5 

366 

845  R  Ceti  SERIES  I. 

(1900)  2h  20m  55'    (+38.06);     — 0°  37'.8     (+0'.27) 

Period:  167d.O;     Variation:  8M— 13|M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

e 

1 

—  1°338 

0.0 

8.0 

a 

2 

—  0°S67 

10.2 

8.5 

d 

3 

—  0°365 

14.2 

8.6 

f 

4 

—  0°363 

23.7 

9.1 

c 

6 

—  1°333 

27.1 

9.4 

b 

7 

—  1°339 

28.1 

9.4 

L 

9 

34.6 

9.8 

845 


R  Ceti 


Series  I. 


117 


1800+ 

Gr.  M.T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

<S9  Dec.       11 

h 

15.3 

I 

ji  (5  R  1  b 

(21.6)1      25.3 

24.5 

11  348 

R2c 

25.1 

12 

13.3 

1 

a  6  R  2  b 

(21.1) 

23.4 

22.8 

349 

R4c 

23.1 

20 

15.0 

III 

a  3  R  1  d 

13.2 

13.5 

14.6 

357 

a3  R6b 

(17.7) 

(16.2) 

21 

13"-15h 

1 

a  2.5  Rid 

12.9 

13.1 

13.0 

358 

22 

16 

1 

a  2  R  3  d 

11.7 

11.8 

11.8 

359 

24 

14.5 

III 

e5  R  1  d 

(9.1) 

(11.8) 

11.2 

361 

a  2  R  1  d 

12.7 

12.8 

26 

12.5 

I 

e  5  R  2  a  .  ! 

6.6 

7.3 

7.4 

363 

e  5  R  4  d 

7.6 

7.9 

90  Jan.          8 

13.5 

I 

e  6  R  3  a 

6.1 

6.8 

6.5 

376 

12 

13.3 

III 

e  8  R  1.5  a 

8.3 

8.6 

8.5 

380 

13 

15.5 

I 

e  7  R  2  a 

7.6 

7.9 

7.8 

381 

16 

14.8 

I 

a  1  R  3  d 

11.2 

11.2 

11.2 

384 

18 

13.5 

III 

a  3  R  2  d 

12.7 

12.6 

12.7 

386 

21 

15.5 

I 

d  2  R  8  f 

15.9 

15.1 

16.0 

389 

23 

14 

I 

d  4  R  6  f 

18.0 

18.0 

18.0 

391 

27 

13 

ID 

d  6  R  3  f 

20.4 

20.5 

20.5 

395 

Feb.       10 

13.5 

I 

c  3  R  2  L 

31.4 

31.6 

31.5 

409 

Oct.        31 

12.3 

ill 

invis. 

>35 

672 

Moon  rising. 

Nov.        3 

15.2 

ill 

L10R 

44.6 

44.6 

675 

7 

13"-15h 

II 

L5  R 

39.6 

39.6 

679 

13 

14 

II 

f4Rlc3b 

26.9 

26.4 

26.6 

685 

R8  L 

(26.6) 

18 

14 

ID 

d  8  R  8  f 

18,9 

18.9 

18.9 

690 

28 

13 

IDD 

a  1  R  2  d 

11.7 

11.5 

11.6 

700 

Dec.       10 

13"-15h 

e  7  R  4  a  3  d 

6.6 

6.5 

6.6 

712 

3-in.  glass. 

d!0f2c2b! 

13 

14 

I 

e7  R5a 

6.1 

5.9 

6.0 

715 

u 

28 

13h-15h 

HDD 

a4  R  2d 

13.2 

12.9 

13.1 

730 

M 

91  Jan.         5 

15.8 

I 

d  7R6c 

21.1 

21.1 

21.1 

738 

5-in.  glass. 

8 

14 

d7f2R5c! 

23.9 

24.7 

24.3 

741 

\ 

14 

13.5 

ID 

c4R6L 

29.8 

30.1 

30.0 

747 

25 

13 

DDD 

invis.,  <  L  ! 

>34.6 

>35 

758 

L  well  seen. 

893  U  Ceti  SERIES  IV. 

(1900)  2h  28m  56s  (+2'.8S);     -13°  35'.2  (+0'.27) 

Period:  235d.8;     Variation:  7M— 12M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

A 

1 

—  12°481  - 

0.0 

6.8 

i 

2 

13°492 

6.7 

7.5 

n 

— 

13°493 

9.7 

(8.8)  BD. 

m 

3 

12°469 

10.8 

8.0 

h 

—  • 

12°489 

14.2 

(9.0)  " 

1 

— 

13°473 

18.8 

(8.9)  " 

g 

8 

13°483 

22.4 

8.7 

f 

7 

13°481  . 

24.9 

8.6 

B 

11 

13°487 

34.9 

9.2 

e 

10 

14°479 

35.2 

9.0 

d 

12 

13°474 

41.6 

9.3 

a 

17 

13°476 

46.6 

9.6 

b 

19 

—  13°478 

50.6 

9.8 

c 

22 

(53.6) 

10.0 

(118) 


893 


U  Ceti 


Scries  IV. 


119 


1800  + 

Or.  M.  T. 

Sky 

Comparisons 

I 

.11 

Mean 

2400000  + 

Remarks 

89  Dec.       12 

h 
13.5 

I 

1)  1  U  2  c 

51.6 

51.6 

51.6 

11  349 

20 

15 

III 

<1  3  U  1  a 

45.1 

45.3 

45.3 

357 

U5b 

45.6 

21 

14 

I 

d  2  U  3  a 

43.6 

43.7 

44.5 

358 

d  2  u  4  c 

(46.6) 

(45.6) 

22 

14 

I 

d  2U4a 

43.1 

43.3 

43.2 

359 

24 

13.5 

III 

d  2  U  3  a  2  c 

43.6 

43.7 

43.7 

361 

2G 

12.5 

I 

e  4  U  2  u 

38.4 

39.5 

39.0 

363 

<JO  Jan.        12 

13.3 

III 

f3U3e4d 

30.0 

30.2 

30.1 

380 

13 

15.5 

I 

f3  U4e 

29.5 

29.3 

29.4 

381 

16 

15 

I 

h  3  U  3  g 

18.3 

18.3 

18.4 

384 

* 

h  3  U  5  f 

18.6 

18.2 

18 

13.3 

III 

li  2  U  5  f 

18.0 

17.3 

16.8 

386 

i5U3g2f,i5h 

15.5 

16.5 

21 

15.5 

I 

A  4  U  1  i 

4.8 

5.4 

5.1 

389 

22 

15 

I 

A  4  UOi 

5.3 

5.3 

390 

23 

14.5 

I 

i  2  U  3  m 

8.2 

8.3 

8.3 

391 

24 

13.5 

HI]) 

i  3  U  0  in 

10.2 

10.2 

392 

Near  horizon. 

27 

13.5 

ID 

A  5U 

5.0 

6.4 

395 

i  1  U  5  m 

6.8 

7.4 

28 

12.8 

3)3)3) 

A  5  Ul  i 

5.3 

5.6 

5.2 

396 

A  5  U  6  m 

4.9 

4.9 

Feb.       10 

13 

I 

A4U11 

4.9 

5.4 

5.2 

409 

12 

13 

A  5  U  1  i 

5.4 

5.6 

5.5 

411 

16 

13h-15h 

III 

i  2  U  8  g  ! 

11.5 

9.8 

10.7 

415 

18 

M 

III 

i  2  U  8  g 

11.5 

9.8 

10.7 

417 

Difficult. 

22 

If 

HID 

i  3  U6g 

13.0 

11.9 

12.5 

421 

Mar.         6 

12.8 

I3)D3> 

i  3  U  7  g 

12.5 

11.4 

12.0 

433 

Near  horizon. 

8 

13h-15h 

I 

i  10  U  2g 

18.5 

19.7 

19.1 

435 

. 

Aug.      25 

17.5 

II  D 

g  1  U  3  f 

22.6 

23.0 

22.8 

605 

Sept.        8 

17.1 

in 

'i  7  U  5  1 

13.8 

13.7 

13.8 

619 

15 

16.3 

I 

i  3  U  10  1 

10.5 

9.7 

10.1 

626 

17 

15.3 

I 

14  U 

10.7 

10.7 

628 

Oct.          3 

14 

I 

U=i 

6.7 

6.7 

644 

5 

13 

in 

i  1  U! 

7.7 

7.7 

646 

8 

14.3 

I 

U  =  i! 

6.7 

6.7 

649 

17 

13.5 

I 

A7  U  2i 

5.8 

5.2 

5.5 

658 

21 

16.5 

I 

A  6U  2i 

5.3 

5.0 

5.2 

662 

31 

12.5 

in 

i  3  U  0  n  ! 

9.7 

9.7 

672 

,--r 

Nov.        3 

15 

ill 

i  5  U12g 

11.0 

11.3 

10.8 

675 

U4h8g 

10.2 

7 

12h-15h 

II 

i  6  U 

12.7 

11.9 

679 

n  3  U  4  h 

11.5 

11.6 

13 

13h-14h 

II 

ilOU2hlOg 

14.5 

12.9 

13.8 

685 

n  7  U  2  h 

14.5 

13.2 

18 

15.3 

ID 

nlOUSg 

17.0 

16.8 

16.4 

690 

h  2U 

16.2 

h  1.5  U 

15.7 

28 

13.7 

13)3)3) 

g2f4U5B 

29.4 

29.3 

29.4 

700 

30 

13h-15h 

f7U4Ble 

31.4 

31.3 

31.4 

702 

flg31 

* 

i  7  m  7  g,  h  3  rn 

120 


U  Cell 


Series  IV. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

90  Dee,       10 

13 

I3h-15h 
14 

I 
I 

e4U3d 

U  =  d  ! 

38.9 
41.6 

38.9 

38.9 
41.6 

11  712 
715 

3-in  glass,  difficult. 

to 

4407  R  Corvi  SERIES  I 

(1900)  12h  14m  27s    (+3MO);      -18°  42'.0     (— 0'.33) 

Period:  318d.5  ;     Variation:  7M— 12M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

1 

—  18°3379 

2.0 

7.4 

P 

— 

18°3380 

5.3 

(7.0)BD. 

b 

2 

18°3368 

14.6 

7.8 

c 

3 

18°3369 

19.3 

8.0 

r 

— 

19°3466 

24.3 

(8.  5)  BD. 

1 

— 

17°3596 

27.0 

(8.3)BD. 

d 

8 

18°3372 

(27) 

9.5 

m 

4 

18°3362 

31.0 

8.5 

k 

5 

18°3365 

31.3 

8.8 

n 

6 

18°3373 

31.3 

8.9 

h 

7 

18°3364 

34.3 

9.2 

e 

11 

—  18°3366 

(35) 

10.0 

4407 


R  Corvi 


Series  I. 


121 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II       j  Mean 

2400000+ 

Remarks 

89  Mar.       26 

h 
17 

I 

d  3  R3e 

31.0 

31.0 

31-0 

11  088 

Apr.        4 

16.8 

I 

c3  R3  d 

23.1 

23.1 

23.1 

097 

R  1M  >  e. 

23 

16.2 

I 

b3  R  1  c 

17.9 

18.1 

18-0 

116 

May        3 

15 

III 

b  3  R  4  c 

16.4 

16.6 

16.5 

126 

e  in  vis. 

b2R3c 

16.4 

16.5 

16.5 

17 

15 

I 

b  2R1  c 

17.4 

17.7 

17.6 

140 

23 

15 

III 

b  3  R  1  c 

17.9 

18.1 

18.0 

146 

90  Feb.       13 

13h-15h 

I 

c  2  R  8  h 

23.8 

22.3 

23.1 

412 

14 

u 

I 

c  3  R  10  h 

23.3 

22.8 

23.4 

413 

* 

R6k 

(25.3) 

c3R21,mOk4h 

23.7 

23.9 

, 

15 

u 

I 

c3R3  1 

23.1 

23.1 

23.1 

414 

17 

u 

I 

c3R41 

23.6 

22.9 

23.3 

416 

20 

It 

I 

b  3  R  2  c 

17.4 

17.4 

17.4 

419 

•    21 

16.7 

I 

b3R2c! 

17.5 

17.4 

17.4 

420 

26 

I3h-15h 

D 

a8R  2b 

11.3 

12.1 

11.9 

425 

Clouds. 

p6  R2b4c 

11.9 

12.3 

Mar.         9 

a 

I 

p  1  R  8  b 

6.4 

6.0 

6.8 

436 

I 

a6  R8b 

7.3 

7-4 

16 

a 

I 

a  L  R  2  p 

3.1 

3-1 

3.1 

443 

19 

a 

I 

a  1  R  3  p 

2.7 

2.8 

2.8 

446 

23 

13 

I 

a  1  R  2  p 

3.1 

3.1 

3.1 

450 

*) 

26 

a 

D 

R  la 

1.0 

1.2 

453 

R4p 

1.3 

Apr.         1 

15 

13)])]) 

Rl  a 

1.0 

1.2 

459 

R4p 

1.3 

7 

15.5 

DDD 

a2Rlp! 

4.1 

4-2 

4.2 

465 

11 

13h-15" 

DDD 

p  2R8b 

7.0 

7.2 

7.1 

469 

14 

15.5 

I 

p  4R5b 

9.4 

9.4 

9.4 

472 

19 

14.5 

I 

p  7  R  3  b 

11.9 

11.8 

11.9 

477 

20 

15 

I 

p  8  R2b 

13.0 

12.7 

12.9 

478 

22 

u 

ill 

b  1  R  5  c 

14.9 

15.4 

15.2 

480 

28 

u 

ID 

cl  R91 

19.2 

20.1 

20.0 

486 

c  1  R  4  r 

20.3 

20.3 

Mav         8 

14.5 

ill 

c  3  R  2  k  3  h 

25.8 

26.4 

26.1 

496 

12 

15 

I 

c  5  R  3  m  2  k 

25.7 

26.0 

26.0 

500 

R  5  k  2  h  ! 

26.3 

21 

14.5 

III 

13Rlra2kOn 

29.5 

32.2 

32.0 

509 

R2h 

32.3 

27 

15 

n  D 

1  4  R  5  h 

30.1 

30.2 

30.2 

515 

June      14 

14.5 

II 

R<e 

>35 

>35 

533 

Vis.  by  averted  vision. 

')  The  original  has:  p  2  R  1  d,  which  seems  to  be  an  error  in  recording. 


4805  W  Virgin  is  SERIES  IV, 

(1900)  12"  201"  52s     (+39.09);     -2°  51'.5     (— 0'.31) 

Period:  17d.2711 ;  Variation:  9M— 10M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

f 

5 

—  3°3458 

6.0 

8.3 

g 
h 

8 

3°3461 
3°3460 

10.0 
16.9 

(8.5)BD. 
9.0 

c 
in 

22 

2°3697 
2°3679 

(19.0) 
21.4 

(8.9)  « 
9.5 

e 

18 

2°3678 

23.6 

9.4 

n 

23 

3°3463 

23.9 

9.6 

d 

15 

2°3688 

27.0 

9.5 

P 

b 

24 

1°2821 

—  2°3687 

29.7 
31.3 

(9.5)  « 
9.7 

(122) 


4805 


W  Virginis 


Series  IV. 


123 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

.11 

Mean 

2400000  + 

Remarks 

89  Apr.         4 

h 

17.5 

I 

c  4  W  4  d  2  b 

23.0 

23.0 

23:0 

11  097 

23 

16.8 

I 

c2  W4e 

20.3 

20.5 

20.9 

116 

*) 

c  2  W  5  d 

21.5 

21.2 

May         3 

15.2 

III 

WOe 

23.6 

24.4 

126 

c  7  W  3  d 

25.0 

24.6 

17 

15.1 

I 

c  2  W  5  d 

21.5 

21.2 

21.1 

140 

c  2  W  3  e 

20.8 

20.8 

**\ 

23 

15.1 

III 

d  0  W  3  b 

27.6 

27.6 

146 

Difficult. 

90  Feb.       15 

13"-loh 

I 

g  3  W  2  h 

13-9 

14.1 

14.0 

414 

i    17 

a 

b  2  W  3  e 

18.7 

19.6 

19.2 

416 

20 

a 

I 

e3  W 

(26.6) 

28.3 

419 

d  2  W  3  b 

28.7 

28.7 

28.7 

21 

10.8 

I 

d  2  W  3  b 

28.7 

28.7 

28.7 

420 

26 

13h-15h 

D 

b  6  W  2  d 

(23.9) 

(24.5) 

25.2 

425 

Cloudy. 

e  3  W  2  d 

25.8 

25.6 

Mar.         9 

ci 

13)3) 

invis. 

436 

16 

u 

I 

g  3  W  4e 

16.3 

15.8 

16.1 

443 

19 

a 

I 

g  2  W  4  h 

12.4 

12.3 

13.2 

446 

f6W6e,m2e 

(14.8) 

(14.8) 

23 

(4 

I 

g  5  W  2  h 

15.0 

14.9 

15.4 

450 

W  5  m  2  e 

16.4 

26 

« 

D 

h  1  W  4  ni 

17.6 

17.8 

17.7 

453 

Apr.         1 

15.5 

IDD 

d  3  W  1  b 

30.1 

30.9 

30.5 

459 

7 

15 

J» 

h  0  W  4  in 

17.2 

17.2 

465 

11 

13h-15" 

h  2  W  4  m 

18.2 

18.4 

18.3 

469 

12 

a 

W  =  m 

21.4 

(25.9) 

470 

d  1  W  3  b 

28.1 

28.1 

13 

u 

in  4  W 

(25.4) 

29.2 

471 

Not  sure. 

d  3  W  1  b 

30.1 

30.1 

14 

15.1 

I 

m  0  W  1  d 

23.7 

23.7 

472 

19 

14.6 

I 

1)  3  W  2  m 

19.6 

20.6 

20.1 

477 

20 

15.1 

I 

W  =  h 

16-9 

16.9 

478 

21 

13h-15" 

h  2  W  4  in 

18-1 

18.4 

18.3 

479 

22 

15.1 

II 

h  1  W  5  in 

17  1 

17.6 

17.4 

480 

28 

16 

ID 

g  6  W  2  h 

15-5 

15.2 

15.4 

486. 

Mav         8 

14.6 

ill 

g  4  W  2  b 

14-4 

14.6 

14.5 

496 

12 

15.5 

I 

W=h,orWlh 

16-4 

16.4 

500 

Seeing  poor. 

21 

14.6 

HI 

m  2  W  4  d 

23.2 

23.3 

23.3 

509 

27 

15.2 

ill) 

g  5  W  1  b 

15.4 

15.7 

15.6 

515 

June      14 

14.5 

II 

g  4  W  3  b 

14.0 

13.9 

14.0 

533 

19 

15 

I 

h  1  W  2  n 

19.9 

19-2 

19-6 

538 

July         5 

14 

I 

g  4  W  3  h 

14.0 

13.9 

14-0 

554 

6 

15.6 

I 

h  1  W  2  n 

19.9 

19-2 

19.6 

555 

7 

15.6 

I 

h  3  W  1  n  0  m 

21.4 

22.1 

21.3 

556 

8 

14.5 

I 

u  2  W  3  p 

26.3 

26.2 

27-1 

557 

d  1  W  4  b 

27.6 

28.1 

9 

14.6 

I 

n  1  W  4  p 

25.3 

25-1 

25-8 

558 

d  0  W 

27.0 

*)  The  original  has/  2  W  4  e,  which  is  a  poor  observation,  the  interval  e-f  being  too  large,     c  2  W  is  taken  from 

the  second  observation. 
**)  The  original  has/  5  W  instead  of  c  2  W  ;   see  preceding  note. 


124 


4805 


W  Virginia 


Series  IV. 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

90  Julv       10 

h 

14.8 

III 

d  4  W  2  b 

30-1 

29.9 

30.0 

11  560 

Difficult,  but  sure. 

11 

14.8 

I 

n  3  W  3  p 

26-8 

26.8 

26.9 

561 

W  =  d 

27-0 

13 

15.2 

III 

n  4  W  2  p 

27.8 

27-8 

27-8 

562 

14 

14 

II 

h  4  W  3  n 

20-9 

20.9 

20-9 

563 

15 

14 

III 

n  1  W  6  p 

24  3 

24.7 

24-0 

564 

n^W.I 

W4d 

23.0 

16 

13.8 

I 

h  2  W  5  n  ! 

18-9 

18.9 

18-9 

565 

18 

14.8 

I 

g  5  W  1  h 

15.4 

15.9 

15-7 

567 

19 

14.5 

I 

g  5  W  3  h 

14-4 

14.3 

14.3 

568 

g  6  W  4  h 

14-4 

14.1 

4816  V  Virginis  SERIES  I. 

(1900)  13"  22m  38s  (+3°.09);     -2°  39'.2     (— 0'.31) 

Period:  250d.5  ;     Variation:  8|M— <13M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

i 

2 

—  2°3689 

15.7 

9.1 

h 

— 

3°3460 

16.9 

(8.9)BD. 

k 

3 

2°3690 

25.7 

9.5 

d 

4 

2°3688 

27.0 

9.6 

b 

6 

—  2°3687 

31.3 

9.9 

Notes  : 


These  few  observations  were  made  incidentally  with  those  of  W  Virginis,  and  were  reduced  by  the  same  scale 
as  the  latter. 


4816 


V  Virgin  is 


Scries  I. 


125 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

.  II 

Mean 

2400000+ 

Remarks 

89  Mar.       26 

h 

19 

I 

invis. 

<31 

11  088 

Apr.         4 

17.9 

I 

u 

a 

097 

23 

16.9 

I 

(i 

d 

116 

90  Mar.      16 

13"-15h 

1 

d  1  V  3  b 

28.1 

28.1 

28.1 

443 

19 

« 

I 

d  2  V  3  b 

28.6 

28.7 

28.7 

446 

23 

13.5 

I 

d  2  V  2  b 

28.1 

29.2 

28.7 

450 

i 

26 

13h-15h 

D 

d  2  V2b 

28.1 

29.2 

28.7 

453 

Apr.       11 

u 

h  5  V  3  d 

22.9 

23.2 

23.1 

469 

14 

15.5 

I 

i  7  V  3  d 

23.3 

23.6 

23.5 

472 

,    19 

14.8 

I 

i  7  V  5  d 

22.3 

22.3 

22.3 

477 

20 

15.2 

I 

i  8  V  4  d 

23.3 

23.2 

23.3 

•  478 

22 

15.2 

II 

i  7  V3k 

22.7 

22.7 

22.7 

480 

28 

15.5 

ID 

i  8  V  4  k 

22.7 

22.3 

22.5 

486 

May         8 

14.7 

in 

i  7  V  3  k 

22.7 

22.7 

22.7 

496 

• 

12 

15.6 

i 

i  7  V  3  k 

22.7 

22.7 

22.7 

500 

Seeing  poor. 

21 

14.7 

in 

d4  VI  b 

30.6 

30.4 

30.8 

509 

V=b 

31.3 

27 

15.2 

n  D 

invis.  in  2) 

>31.3 

>31 

515 

V<b! 

June      14 

14.7 

n 

barely  vis. 

a 

533 

V<d!f 

4847  S  Virginis  SERIES  I. 

(1900)  13h  27m  47s    (  +  3M3);     -6°  40'.8     (— 0'.31) 
Period:  376d.4;     Variation:  7M— 12|M. 
Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

g 

1 

—  5°3706 

0.0 

(6.6)BD. 

c 

2 

6°3839 

10.0 

7.3 

f 

3 

6°3843 

21.1 

8.0 

d 

4 

6°3834 

27.2 

8.5 

e 

6 

6°3840 

36.2 

8.8 

h 

5 

6°3832 

39.2 

8.8 

k 

7 

6°3836 

45.2 

9.2 

n 

8 

6°3833 

47.2 

9.4 

m 

12 

—  6°3835 

53.2 

9.8 

Notes  : 

The  first  three  of  these  observations  have  a  different  scale  of  steps  from  those  of  the  following  year,  the  inter- 
val d-c  being  on  the  average  only  8  units,  or  less  than  one-half  the  same  interval  in  the  general  scale.  This  will 
explain  the  discrepancies  in  their  reduction  to  the  latter  scale. 


126 


4847 


S  Virginia 


Series  I. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

1 

II 

Mean 

2400000  + 

Remarks 

89  Mar.       28 

h 

13 

I 

c  2  S  6  d 

(16.6) 

14.3 

15.1 

11  090 

Apr.         4 

18 

I 

c  1  S5d 

(18.4) 

12.9 

14.7 

097 

23 

17 

I 

c  4  S  6  d 

(17.6) 

16.9 

17.1 

116 

90  Feb.       15 

13h-15h 

I 

f4S  2d 

25.2 

25.2 

25.2 

414 

17 

u 

f  2S5d 

22.6 

22.8 

22.7 

416 

20 

11 

I 

fOS5d 

21.7 

21.7 

419 

21 

17 

I 

fOS5  d 

21.7 

21.7 

420 

26 

13h-15h 

D 

c5S5f 

15.5 

15.5 

15.5 

225 

Cloudy. 

Mar.         9 

I 

c3S7f 

13.6 

13.3 

13.5 

436 

16 

I 

c3S8f 

13.0 

13.0 

13.0 

443 

19 

I 

c  1  S7f 

12.6 

11.4 

12.0 

446 

23 

I 

c  =  S 

10.0 

10.0 

450 

26 

D 

g8  S2c 

8.0 

8.0 

8.0 

453 

Apr.         1 

15.7 

IDD 

g8S2c 

8.0 

8.0 

8.0 

459 

7 

16 

DDD 

c2S8f 

12.6 

12.2 

12.4 

465 

11 

13h-15h 

c3S7f 

13.6 

13.3 

13.5 

469 

14 

15.9 

I 

c4S8f4d 

13.5 

13.7 

13.6 

472 

19 

14.8 

I 

c5S6f 

15.0 

15.1 

15.1 

477 

20 

15.5 

I 

c5S5f 

15.6 

15.5 

15.6 

478 

22 

15.5 

III 

c6S4f 

16.5 

16.6 

16.6 

480 

28 

16.3 

I 

c6S4f 

16.5 

16.6 

16.6 

486 

May         8 

14.8 

III 

f3S4d 

23.7 

23.7 

23.7 

496 

12 

15.9 

I 

f2S4d 

23.1 

23.1 

23.1 

500 

Seeing  poor. 

21 

14.8 

III 

f7S2d 

26.6 

25.8 

26.2 

509 

27 

15.5 

11} 

d  3  S  6  e  • 

30.2 

30.2 

30.2 

515 

June      14 

15 

II 

e  3  h  2  S  3  k 

41.7 

41.2 

41.5 

533 

19 

15.2 

I 

e3  h4S3k 

42.7 

42.2 

42.5 

538 

July         5 

14.5 

I 

k4S 

49.2 

49.2 

554 

n  2  S  4  m  ! 

49.2 

49.2 

6132  R  Ophinchi  SERIES  1. 

(1900)   17"  2ra  1s    (-f-3".44);      -15°  57'. Q    (— O'.OS) 
Period:  302d.7  ;     Variation:  7JM  — 12". 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

—  16°4434 

10.0 

(7.5)BD. 

b 

16°4436 

16.1 

(7.3)  * 

c 

2 

15°4466 

24.7 

8.0 

d 

3 

—  16°4426 

33.7 

8.2 

Notes  : 

When  the  variable  is  brighter  than  the  brightest  comparison  star,  as  on  September  9,  15,  and  17,  both  forn 
ulas  I  and  II  can  be  used  with  a  little  modification.  Thus  on  September  9  formula  I  requires  2  steps  to  be  sul 
tracted  from  a  and  8  from  b.  Formula  II  only  requires  an  interchange  of  R  and  a,  and  will  read  thus: 

10  =  R  +  2  16'1~R,  or  R  =  8.0, 

.  -  o 

and  similarly  for  September  15  and  17. 


(127) 


128 


6132 


R  Opliinchi 


Series  I. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

11 

Mean 

2400000+ 

Remarks 

90  Aug.      15 

n 

14.5 

I 

b2R4c 

19.4 

19.0 

19.2 

11  595 

23 

14.8 

II  D 

b  1  R  8  c 

16.9 

17.1 

17.2 

603 

R7  c 

17.7 

Sept.        3 

14 

I 

a2R4b! 

12.0 

12.0 

12.0 

614 

9 

14 

ill 

R2a  6b! 

8.0 

8.0 

8.0 

620 

15 

13.8 

I 

R3  a5b 

7.5 

6.3 

6.9 

626 

17 

14.2 

I 

R3a6b 

7.0 

7.0 

7.0 

628 

24 

13.5 

I  DD 

a  2  R  4  b 

12.0 

12.0 

12.0 

635 

26 

12.5 

TOD 

a3R3b 

13.0 

13.0 

13.0 

637 

• 

Oct.         3 

12.5 

I 

a5R3b! 

14.0 

13.8 

13.9 

644 

5 

12.5 

ill 

b  4  R  6  c 

19.4 

19.5 

19.5 

646 

Near  horizon. 

8 

13 

I 

b4R6  c 

19.4 

19.5 

19.5 

649 

Not  remembered. 

14 

12.3 

cORSd 

25.2 

25.2 

655 

Damp. 

17 

12.5 

I 

c4R6d 

28.2 

28.3 

28.3 

658 

6905  R  Sagittarii  SERIES  I. 

(1900)  19h  10m  49'     (+33.52);     —19°  29'.0     (+OMO) 

Period:  268d.7 ;  Variation:  7|M— 12iM. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

g 

2 

—  19°5387 

0.0 

8.0 

h 

3 

5398 

6.7 

8.1 

i 

5 

5388 

15.5 

8.4 

k 

8 

5386 

25.7 

8.7 

1 

10 

5375 

28.7 

8.8 

m 

12 

5384 

33.7 

9.0 

n 

21 

—  19°5368 

42.2 

9.5 

Notes  : 


The  interval  l-k  is  not  determined  by  the  observations,  and  was  taken  from  the  ASV.,  the  scale  of  which 
closely  agrees  with  the  steps  of  these  observations. 


6905 


R  Sagittarii 


Series  I. 


1800+ 


90  Aug.   15 

23 

Sept.    3 


9 

15 

17 

24 

3 

5 

8 

14 
17 
31 


Oct. 


Nov 


5 

9 
13 

18 


Gr.  M.  T. 


14.8 

15.5 

14.5 

16 

14.3 

14 

14.5 

13.8 

12.8 

12.6 

13.3 

12.5 

12.6 

12 

12.8 

12.5 

12.5 

13 


Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks. 

I 

m  5  R  3  n 

39.0 

39.0 

39.0 

11  595 

H]) 

m  3  R  6  n 

36.5 

36.5 

36.5 

603 

I 

1  1  R  4  m 

29.7 

29.9 

29.8 

614 

III 

i  7  R3k 

22.6 

22.8 

22.7 

619 

Near  horizon. 

III 

i  8  R3k! 

23.1 

23.1 

23.1 

620 

I 

i  3R5k 

19.6 

19.8 

19.7 

626 

I 

i4R7k 

19.1 

19.3 

19.2 

628 

IDD 

h  7  R  3  i 

13.1 

12.9 

13.0 

635 

i 

g3R2h5i 

3.8 

4.0 

3.9 

644 

in 

g  4  R  2  h 

4.3 

4.5 

4.4 

'  646 

i 

g  3  R  4  h 

2.8 

2.9 

2.9 

649 

g  3  R  5  h 

2.3 

2.5 

2.4 

655 

Damp. 

i 

gl  R5h 

1.3 

1.1 

1.2 

658 

in 

g  6  R  2  h 

5.3 

5.0 

5.2 

672 

i 

h  3  R  7  i 

9.1 

9.3 

9.2 

677 

i 

h  5  R  5  i 

11.1 

11.1 

11.1 

681 

ii 

h  7  R  2  i 

13.6 

13.5 

13.6 

685 

Damp. 

ID 

i4R  7k! 

19.1 

19.2 

19.2 

690 

6921  S  Sagittarii  SERIES  I. 

(1900)  19h13m  35s    (+38.51);      -19°  12'.4     (+OM1) 

Period;  230d.6 ;  Variation:  10M— <14M. 

• 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps. 

Magn. 

q 

30 

0-0 

10-0 

p 

35 

—  19°5397 

6.3 

10.2 

Notes  : 


This  variable  is  too  faint  for  the  instrument  used,  and  was  observed  only  because  it  is  in  the  same  field  an 
R  Sagittarii,  and  happened  to  reach  its  maximum  brightness  at  the  same  time  with  the  latter. 


130 


6921 


S  Sagittarii 


Series  1. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

90  Aug.      15 

h 

14.8 

I 

S  invis. 

>15 

11  595 

*) 

23 

15 

II]) 

(I 

u 

603 

Sept.        3 

14.4 

T 

it 

M 

614 

8 

16.5 

III 

it 

619 

9 

14.3 

III 

S  barely  vis. 

it 

620 

15 

14.1 

I 

p2S 

8.3 

8.3 

626 

17 

14.9 

I 

S  invis. 

>7 

628 

18 

13h-15b 

I 

u 

u 

629 

Oct.         3 

13.2 

I 

p3S 

9.3 

9.3 

644 

8 

13.7 

I 

SI  p 

5.3 

5.3 

649 

14 

12.7 

q  3  S  4  p 

2.6 

2.7 

2.7 

655 

Damp. 

17 

13 

I 

q  4  S  3  p 

3.6 

3.5 

3.6 

658 

31 

12.1 

III 

q  5  p4S 

10.3 

10.3 

672 

Nov.        5 

12.8 

I 

p8  S! 

14.3 

14.3 

677 

9 

12.6 

I 

p  10  S 

16.3 

16.3 

681 

Approximate. 

13 

II 

p  15  S 

21.3 

21.3 

685 

Faint  glimpse. 

*)  The  limit      15  may  be  concluded  from  the  last  three  observations  (November  5-13). 


7468  T  Aquarii  SERIES  I. 

(1900)  20h  44- 40s    (+3M7);     — 5°  Sl'.l     (+0'.22) 

Period:  203d!^;     Variation:  7|M— 13M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps. 

Magii. 

b 

6 

—  5°5396 

0.0 

7.9 

d 

7 

5383 

4.0 

8.2 

c 

9 

5393 

9.7 

8.5 

h 

10 

5394 

18.7 

9.0 

k 

— 

5385 

20.0 

(9.0)BD. 

e 

22 

5398 

20.7 

10.0 

f 

15 

5387 

25.7 

9.3 

g 

21 

—  5°5389 

33.7 

10.0 

7468 


T  Aquarii 


Series  I. 


131 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

S9  Aug.     .31 

h 

15.5 

I  . 

b  1  T  2  c 

4.3 

3.2 

3.8 

11  246 

Sept.      19 

15 

b  2  T  3  c 

4.3 

3.9 

4.1 

265 

21 

9.2 

I 

b  3  T  2  c 

5.3 

5.6 

5.5 

267 

27 

8.2 

I 

b  4  T  1  c 

6.3 

7.8 

7.0 

273 

d  1  T  1  c 

6.9 

6.9 

Oct.        10 

13.2 

III  ])])]) 

c  4  T  3  e 

15.7 

16.0 

15.9 

286 

90  Sept.      15 

14.3 

I 

f  3  T  5  g 

28.7 

28.7 

28.7 

626 

17 

15 

I 

f  2  T  6  g 

27.7 

27.7 

27.7 

628 

24 

15 

IDDD 

h  5  T  3  f 

23.2 

23.1 

23.2 

635 

,     26 

12.8 

IDD]) 

h  3  T  6  f 

20.7 

21.1 

20.9 

637 

Oct.          3 

14 

i 

d  4  T  1  c  5  h 

8.3 

8.6 

8.5 

644 

5 

12.8 

in 

d5c2T10h 

10.2 

11.2 

10.7 

646 

T  <  c  ! 

8 

14 

i 

d5c2T8h3f 

10.7 

11.5 

11.2 

649 

14 

13.3 

in 

d  2  T  4  c 

5.8 

5.9 

5.9 

655 

17 

13.3 

i 

d  5  T  3  c 

7.8 

7.6 

7.7 

658 

21 

16 

i 

d  3  T  6  c 

5.3 

5.9 

5.6 

662 

Near  horizon. 

31 

d4c3T7f! 

15.7 

14.5 

15.1 

672 

Nov.        3 

14.8 

in 

d5T3c8f! 

7.8 

7.6 

7.7 

675 

5 

13.1 

i 

d6TlclOf! 

9.3 

8.9 

9.1 

677 

9 

13 

i 

c2T6k3f 

12.9 

12.3 

12.6 

681 

13 

13.1 

ii 

c3.5T4k3.5f 

14.6 

14.5 

14.6 

685 

Damp. 

18 

13.5 

I  D 

c  5  T  4  k  4  f 

15.3 

15.4 

15.4 

690 

28 

12.5 

l$])]) 

h  2  e  3  T  2  f 

23.7 

23.7 

23.7 

700 

g  hardly  vis. 

8230  S  Aquarii  SERIES  I- 

(1900)  22h  51m  45s     (+3S.22);     —  20°  52'.6     (+0'.32) 

Period:  279d.7;     Variation:  8M— <12|M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

d 

2 

—  21°6334 

0.0 

7.9 

e 

3 

6333 

8.4 

8.3 

a 

4 

6325 

10.4 

8.5 

h 

5 

6341 

11.1 

8.8 

g 

— 

6317 

16.5 

(8.9)BD. 

k 

7 

6342 

21.0 

9.4 

b 

10 

6323 

22.7 

9.6 

in 

11 

6332 

.  25.7 

9.6 

c 

9 

6336 

25.7 

9.5 

n 

17. 

—  21°6335 

26.7 

10.0 

8230 


S  Aqnarii 


Series  I. 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

89  Sept.      19 

13h-15h 

I 

bOS  1  c 

23.7 

23.7 

11  265 

21 

15 

I 

bOS  2c 

23.2 

23.2 

267 

27 

14.8 

I 

a5S3b! 

17.6 

18.1 

17.9 

273 

28 

13-15 

a5S3b 

17.6 

18.1 

17.9 

274 

Oct.        10 

13 

HI  1)1)1) 

d  5S  2ela 

5.7 

6.0 

5.9 

286 

11 

13 

III 

d  5  S  3  a 

6.2 

6.5 

6.4 

287 

82  e 

6.4 

15 

15.7 

II 

d  6S  3  e 

5.7 

5.6 

5.7 

291 

17 

14.7 

II 

d  6  S  3  e 

5.7 

5.6 

5.7 

293 

19 

15 

III 

d  6S  3e 

5.7 

5.6 

5.7 

295 

Nov.        3 

13h-15h 

H])])]) 

<i  6  S  3  e 

5.7 

5.6 

5.7 

310 

10 

14 

III]) 

d  5S3e 

5.2 

5.2 

•5.2 

317 

14 

15 

I 

d  5S4e 

4.7 

4.7 

4.7 

321 

28 

15 

ID 

e2S  1  a 

9.7 

9.7 

9.7 

335     Near  horizon,  difficult. 

29 

12.6 

1) 

e3S 

11.4 

11.4 

336 

Passing  clouds. 

a  1  S 

11.4 

30 

12.2 

a3S7  b 

14.6 

14.1 

14.4 

337 

Dec.         1 

12 

a  3  S  7  b 

14.6 

14.1 

14.4 

338 

11 

14.3 

I 

a  5  S  5  b 

16.6 

16.6 

16.6 

348 

Near  horizon 

12 

12.7 

I 

a5S  5b 

16.6 

16.6 

16.6 

349 

S  —  g  ! 

16.5 

21 

12.7 

I 

a  4g3S3b 

19.6 

19.6 

20.3 

358 

S4c! 

21.7 

22 

13 

I 

g  3  S  4  b 

19.1 

19.2 

19.2 

359 

26 

12 

I 

g5S  1  b 

21.6 

21.7 

21.7 

363 

Near  ]) 

90  Jan.         8 

13 

I 

S<b 

>23 

376 

Too  low,  windy. 

July         7 

15.2 

T 

S<a 

>n 

556 

11 

15.5 

I 

b  2S4c 

23.2 

23.7 

23.5 

560 

14 

14.3 

II 

h  6  S  1  k 

18.6 

19.6 

18.2 

563 

(elOSSb) 

(16.6) 

(16.4) 

Approximate. 

16 

14 

I 

h  3  S  5  k 

15.1 

14.8 

14.5 

565 

(S  10  b) 

(12.7) 

18 

15.5 

I 

h4S3g 

14.3 

14.2 

14.3 

567 

20 

14.6 

I 

h  3  S  2  g 

14.3 

14.3 

14.3 

569 

Aug.        3 

13"-15h 

DDD 

e7S5g 

13.5 

13.1 

13.3 

583 

6 

u 

ill 

e7S  7g 

12.5 

12.5 

12.5 

586 

e6S6g 

12.5 

12.5 

Difficult. 

12 

11 

e6S  7g 

12.0 

12.1 

11.2 

592 

e  6  S  4  h 

10.8 

10.0 

Seeing  very  poor. 

15 

" 

e  6  S  8  g 

11.5 

11.9 

11.1 

595 

e  6  S  4  h 

10.8 

10.0 

23 

16 

II]) 

e2a6S2h4g 

12.8 

10.9 

11.9 

603 

25 

17.3 

H]) 

h  2S6g 

11.8 

12.5 

12.6 

605 

h>S! 

h  2  S  8  k 

13.1 

13.1 

Sept.        3 

14.2 

I 

h  2S  Ig! 

14.3 

14.7 

14.5 

614 

8 

17.1 

III 

h  4  S  4  k 

16.1 

16.1 

17.0 

619 

g  2S4k 

17.8 

18.0 

9 

14.5 

HI 

h  6  S  4  k 

17.1 

17.0 

17.9 

620 

g4S6b,k4c 

18.6 

19.0 

15 

14.3 

I 

g5S3k2b 

19.8 

19.3 

19.6 

626 

17 

15.3 

I 

g  6  S  2  k 

20.8 

19.9 

20.4 

628 

Oct.         3 

13.4 

l 

b  3  in  3  S  5  n 

25.2 

26.1 

25.7 

644 

Nova  Aurigae    1892 

(1900)  5"  25'"  34s     (+38.S5);     +  30°  22'.2     (+0'.05) 


Variation  :  4JM  —  <  13M. 


Comparison  Stars : 


Obs. 

BD. 

Steps 

BD. 

H. 

L. 

a 

+33°  1000 

0.0 

M 

5.1 

M 

5.1 

b 

32  922 

6.0 

5.5 

5.3 

M 

"/. 

32  1024 

6.9 

4.8 

5.4 

5.00 

< 

c 

33  1013 

11.1 

5.9 

5.5 

d 

30  963 

18.0 

6.0 

5.9 

5.70 

e 

30  898 

24.7 

6.2 

6.2 

5.86 

g 

29  947 

29.4 

6.2 

6.4 

h 

29  899 

36.2 

7.0 

6.6 

k 

29  911 

53.7 

7.5 

7.4 

a 
f 

r 

8 

£ 

f 

/C 

29  923 
29  921 
30  912 
30  913 
30  914 
30  920 

59.7 
66.7 
68.2 
75.2 
85.4 
91.7 
94.2 

7.8 
8.5 
8.5 
8.7 
9.4 
9.5 

7.8 
8.3 
8.4 
8.9 
9.5 
9.9 
10.0 

I 

+30  924 

98.9 
102.9 

9.5 

10.3 
10.6 

South  pr.  7) 
North  foil.  Nova. 


Notes  : 

The  comparison  star/,  which  was  used  only  a  few  times  with  the  naked  eye,  has  been  discarded  in  the  reduc- 
tions. It  consists  of  two  components  BD.  +  29°953  and  954,  of  magnitude  7.0  and  7.5  respectively,  and  for  this 
reason  its  estimates  do  not  agree  well  among  themselves.  The  space  line  across  the  above  table  separates  the 
naked -eye  comparison  stars  from  the  telescopic  ones.  The  magnitudes  under  H  were  computed  by  the  formulas 
(see  Astr.  J.  XI,  1892,  p.  172) : 

Magii.  =  6.0  +  0.045  (Steps  — 20.7)  for  opera  glass, 

Magn.  =  8.6  -I-  0.062  (Steps  — 71.0)  for  telescope. 

The  three  magnitudes  under  L  are  those  upon  which  Lindemann  based  his  definitive  light  curve  of  the  Nova  in 
the  Melanges  Math,  et  Astr.  (Petersburg.     Bulletin,  t.  VII,  p.  331). 


(133) 


Nova  Aurigss 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

METHOD  BY  STEPS: 


9 

h 
15.0 

a5  N3/ 

(4.5) 

(4.3) 

7.2 

12  138 

All  by  naked  eye  or  0  G. 

b  2  N2c, 

8.6 

8.6 

10 

12.3 

*2N3c,/2b 

8.5 

8.6 

8.6 

139 

11 

13.8 

b  0  N  2  / 

5.5 

5.5 

140 

12 

14.8 

/  3.5  N  0  c 

10.8 

10.8 

141 

Good. 

13 

14.4 

c2N  5d 

13.1 

13.1 

13.1 

142 

14 

15.7 

a3N3bl/ 

3.0 

3.0 

3.0 

143 

Sure. 

15 

12.0 

d  4N3e 

21.9 

21.8 

21.9 

144 

13.5 

d  1  N5e 

19.4 

19.1 

19.3 

M 

14.2 

d  1  N4e 

19.9 

19.3 

19.6 

u 

16.1 

d5Nl  e 

23.4 

23.6 

23.5 

u 

16 

11.8 

d  4f3N3e 

23.4 

22.7 

23.1 

145 

Used  d  7  X  3  e 

12.4 

d  3  N  2  f 

-21.  0 

21.0 

ft 

/  discarded. 

17 

11.8 

b  0^3  N 

9.5 

9.5 

146 

11.9 

/  4  N,b4N 

10.5 

12.6 

ti 

c  3  N  5  d 

13.6 

13.7 

12.4 

c3N4d,*2b 

14.1 

14.1 

14.1 

u 

13.1 

c  3  N  4  d 

14.1 

14.1 

14.1 

« 

14.4 

same 

14.1 

a 

15.4 

same 

14.1 

u 

22 

11.7 

d  4.5  N  2.5  e 

22.4 

22.4 

22.4 

151 

13.2 

el-N3g4f«2'b 

26.1 

25.9 

26.0 

u 

15.0 

e  1  N  4g 

25.6 

25.7 

25.7 

u 

23 

11.6 

d  5  N  4e 

21.9 

21.7 

21.8 

152 

13.0 

d  4  N  2  e 

22.4 

22.5 

22.5 

n 

17.4 

d5  N3e 

22.4 

22.2 

22.3 

n 

f  Cloudy  weather  for  one 

3 

11.8 

c  4  N  2.5  d 

15.3 

15.4 

15.4 

161 

\      week. 

13.4 

c4N2orl.5d 

15.6 

16.1 

15.9 

n 

18.1 

d  2N5e 

19.9 

19.9 

19.9 

u 

5 

12.8 

2)D 

d4N  3e 

21.9 

21.8 

21.9 

163 

Difficult. 

14.9 

d4N2e 

22.4 

22.5 

22.5 

a 

a 

6 

14.1 

P 

e3N4or3.5g2f 

26.7 

26.8 

26.8 

164 

Haze. 

9 

13.0 

5 

h4N 

40.2 

40.2 

167 

u 

10 

13.8 

D 

h8N 

44.2 

44.2 

168 

11 

15.0 

DD 

h!5or20k4.5K 

48.2 

169 

f  N  invisible  in  O  G. 

13 

in  vis. 

171 

1  From  now  5-inch  eq. 

14 

13.7 

k5«3N5/3 

62.2 

62.3 

62.3 

172 

16 

13.7 

/31  N3r 

66.5 

67.1 

66.8 

174 

19 

12.7 

f  8  d  6  N  5  e 

80.8 

80.8 

80.8 

177 

14.0 

d  4  N  7  e 

78.8 

78.9 

78.9 

u 

14.9 

d  5  N6e 

79.8 

79.8 

79.8 

u 

21 

12.8 

r5<*8e5NK 

90.6 

90.6 

90.6 

179 

15.9 

e5N  3  C 

89.6 

89.3 

89.5 

« 

28 

k  7  o  6  0-1  f  8 

>103 

186 

9  10  £  5  : 

C4#>N 

29 

a6b,e4g4f3h 

e4g3f4h 

Nova  Aurigse 


135 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

-  II 

Mean 

2400000+ 

Remarks 

92  Sept.       15 

h 

19.9 

I 

:  2  N  4  // 

96.3 

95.1 

95.7 

12  357 

17 

17.9 

I 

:  2  ?,  i  N  4  '9 

99.4 

99.7 

99.6 

359 

24 

18.2 

I 

:5tf3N2;y4# 

97.1 

97.0 

97.1 

366 

Oct.       16 

16.5 

I 

*  3  N  2  T)  3  * 

97.1 

97.0 

97.1 

388 

18 

17.8 

II 

«1  N3? 

95.6 

95.4 

95.5 

390 

Nov.      20 

15.9 

I 

«0  N 

94.2 

94.2 

12  423 

IV.  Observations  made  by  James  F.  Dawson,  S.  J.,  from  1889  to  1890. 

These  observations  were  made  at  the  Georgetown  College  Observatory.  The  instrument  employed  was  a 
3-inch  telescope,  mounted  equatorially  but  not  sheltered  under  a  dome.  It  had  to  be  carried  every  evening  to  a 
pier  in  the  open  air,  and  adjusted.  The  variables  selected  are  all  southern  except  Algol,  which  was  observed  for 
practice.  The  letters  (D)  and  (H)  after  an  observation  designate  the  Rev.  J.  Daugberty  and  Hagen  respectively 
who  occasionally  took  part  in  the  observations.  The  results  have  been  published  in  the  Astronomical  Journal. 


100  T  Ceti  SERIES  V 

(1900)  0"  16m  42s  (+3S.04);     -20°  36'.7     (+0'.33) 
Period  :  Irreg. ;     Variation  :  5M — 
Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

d 

8 

—  19°21 

0.0 

4.8 

a 

9 

21°24 

10.0 

6.4 

b 

10 

19°30 

11.0 

6.6 

c 

—  20°48 

14.5 

(7.8)BD. 

Notes  : 

Since  this  star  is  "  irregularly  periodic,"  the  maximum  brightness  which  can  be  deduced  from  these  observa- 
tions will  be  of  special  importance. 

The  observations  indicate  a  slight  change  in  the  relative  brightness  of  the  two  comparison  stars  a  and  b. 


(136) 


100 


2  Ceti 


Series  V. 


137 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

.     II 

Mean 

2400000+ 

Remarks 

89  Sept.      22 

ii 
15.5 

II 

b  1  T  2  c 

12.3 

12.2 

12.3 

11  268 

27 

14.5 

I 

b  0  T  2  c 

11.8 

11.8 

273 

*) 

28 

13.5 

I 

b2T2c,or 

12.8 

12.8 

12.5 

274 

*) 

b  1  T  2  c 

12.2 

12.2 

Better. 

Oct.        11 

14.0 

D 

a  1  T  0  b  3  c 

11.0 

10.8 

287 

a2Tlb(H) 

11.0 

10.7 

T  4  c       (H) 

10.5 

15 

15.5 

I 

a  2  T  1  b 

11.0 

10.7 

10.6 

291 

T5c 

9.5 

17 

15.5 

II 

a  1  T  1  b 

10.5 

10.5 

10.5 

293 

18 

16.5 

III 

a  1  T  1  b 

10.5 

10.5 

10.5 

294 

19 

15 

ill 

a  1  T  1  b 

10.5 

10.5 

10.5 

295 

Nov.        3 

13.5 

])DD 

d  9  T  1  a  2  b 

9.0 

9.0 

8.5 

310 

d8T2alb(H) 

8.0 

8.0 

10 

14 

D 

d7T3alb 

7.0 

7.0 

6.5 

317 

d6T4alb(H) 

6.0 

6.0 

14 

15.5 

II 

d  7  T  3  a  1  b 

7.0 

7.0 

7.0 

321 

• 

15 

16.0 

I 

d  6  T  4  a  1  b 

6.0 

6.0 

6.0 

'    322 

16 

14.0 

ill 

d  6  T  4  a  1  b 

6.0 

6.0 

6.0 

323 

23 

15.0 

I 

d  5  T  5  a  0  b 

5.0 

5.0 

5.0 

330 

25 

15.5 

1 

d5T5bla 

5.0 

5.0 

5.0 

332 

28 

15.5 

II 

d  6  T  5  a  1  b 

5.5 

5.5 

5.5 

335 

30 

14.0 

D' 

d  5  T  5  a  1  b 

5.0 

5.0 

5.0 

337 

Dec.         1 

14.5 

D 

d  4  T  6  a  0  b 

4.0 

4.0 

4.0 

338 

2 

14.5 

i 

d  3  T  7  a  1  b 

3.0 

3.0 

3.0 

339 

4 

14.5 

% 

d  4  T  6  a 

4.0 

4.0 

4.0 

341 

11 

14.5 

a 

d  3  T  7  a  1  b 

3.0 

3.0 

3.0 

348 

12 

12.5 

i 

d  3  T  7  a 

3.0 

3.0 

3.0 

349 

13 

14.3 

ii 

d  4  T  6  a  0  b 

4.0 

4.0 

4.0 

350 

14 

ii 

d  3  T  7  a 

3.0 

3.0 

3.0 

351 

20 

14.3 

i 

d  4  T  6  a 

4.0 

4.0 

4.0 

357 

21 

14.5 

ii 

d  4  T  6  b 

4.0 

4.0 

4.0 

358 

22 

13.5 

a 

d3T7a(?) 

3.0 

3.0 

3.0 

359 

23 

14.0 

ii 

d  4  T  6  a 

4.0 

4.0 

4.0 

360 

24 

14.0 

in 

d  3  T  7  a  0  b 

3.0 

3.0 

3.0 

361 

26 

d  3  T  7  a  0  b 

3.0 

3.0 

3.0 

363 

90  Jan.         8 

15.0 

DDD 

d4T6aOb 

4.0 

4.0 

4.0 

376 

12 

d5T5bla 

5.5 

5.5 

5.5 

380 

13 

13.0 

I 

d  6  T  4  b  1  a 

6.5 

6.6 

6.6 

381 

16 

d6T4bla 

6.5 

6.6 

6.6 

384 

17 

ill 

d  6  T  4  a  0  b 

6.0 

6.0 

6.0 

385 

21 

II 

d  7  T  4  b  1  a 

7.0 

7.0 

7.0 

389 

27 

D 

d  6  T  4  b  2  a 

6.5 

6.6 

6.6 

395 

28 

D 

d  7  T  4  b  1  a 

7.0 

7.0 

7.0 

396 

The  original  has  d  instead  of  c  on  both  nights.     Considering  the  observations  before  and  after,  and  the  magni- 
tude of  d,  the  correction  becomes  almost  certain. 


1090  (3  Persei  (Algol)  SERIES  V. 

(1900)  3h  I1"  40"    (+  3".89);     +  40°  34'.2     (+  0'.23) 
Period:  2d  20h  48"'.9  ;     Variation  :  2iM— 3JM. 
Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

r  Persei 

19 

+52°654 

0.0 

3.0 

3       " 

26 

47°876 

3.0 

3.1 

K        " 

23 

44°631 

8.0 

4.1 

r  Androm. 

11 

41°395 

0.0 

2.3 

£  Persei 

30 

31°666 

9.0 

2.9 

S      " 

26 

47°876 

10.4 

3.1 

a  Triang. 

37 

28°312 

12.4 

3.6 

p  Persei 

20 

38°630 

16.4 

Var. 

K         " 

23 

+44°631 

22.2 

4.1 

Notes  : 

The  two  scales  of  comparison  stars  refer  to  the  two  evenings  on  which  the  observations  were  made.  The 
latter  were  intended  only  as  an  exercise  in  estimating  differences  in  magnitude,  but  may  be  useful  as  a  confirma- 
tion of  simultaneous  observations  of  the  same  minima  made  elsewhere. 


(138) 


1090 


Persei  (Algol) 


Series  V. 


139 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

89  Nov.      15 

14"  26"' 

I 

r  2  P  1  '? 

2.0 

2.0 

2.0 

11  322 

34 

r  2  /?  1  5 

2.0 

2-0 

2-0 

45 

r  2  p  1  3 

2.0 

2-0 

2-0 

59 

r  3  /3  0  '> 

3-0 

3-0 

15  10 

r  3  ft  0  'J 

3.0 

3.0 

29 

tf  1  /3  4  « 

4.0 

4.0 

4-0 

42 

o  1  £  4  * 

4.0 

4.0 

4.0 

58 

S  2  /?  3  i: 

5.0 

5.0 

5.0 

10  13 

'5  2  /?  3  * 

5.0 

5.0 

5.0 

- 

17     7 

*l/?4« 

4.0 

4.0 

4.0 

22 

•5  0  /3  5  K 

3.0 

3.0 

i 

30 

•SO/35  * 

3.0 

3.0 

41 

?-  1   ,3  2   «* 

1.0 

1.0 

1.0 

1 

90  Feb.       12 

12h  03m 

I 

r  6  ,5  2  « 

8.2 

9-3 

8.8 

411 

.    . 

13 

:  2/?i« 

11.2 

11-2 

11  2 

24 

C  2.5  /?  0  « 

11.9 

11.9 

35.5 

:  i  a  2  /?  o  « 

12.4 

12.4 

49 

«  1  /?  3  j»  5  /c 

13.4 

13-4 

13-4 

56.5 

«  1  /5  3  /> 

13.4 

13.4 

13.4 

13  05 

a  3  /5  1  /' 

15.4 

15-4 

15-4 

14 

«  4  /?  0  />  6  * 

16.4 

16.4 

22 

pl  p  5  K 

17.3 

17-4 

17.4 

30 

f>  1   (3  5  K 

17.3 

17-4 

17.4 

37 

a  4  /3  0  /' 

16.4 

16.4 

44 

a  3  /5  1  /, 

15.4 

15.4 

15.4 

48 

a  3  P  1  ^ 

15.4 

15-4 

15.4 

58 

«  2  /?  2  /» 

14.4 

14-4 

14.4 

14  18 

C  3  /?  0  a 

12.2 

12-2 

24 

C  1  -5  1  /?  1  a 

11.4 

11-4 

11.4 

31 

C  1  /?  0  S  2  a 

10.2 

10.2 

46 

M£U 

9.7 

9  7 

9.7 

55 

C  0  /5  2  * 

8.7 

8.7 

15  07 

r  8  P  1  C 

8.0 

8.0 

8.0 

' 

1771  R  Leporis  SERIES  IV. 

(1900)  4h  55ra  3s    (+2S.73);     — 14°  57'.4     (+0'.09) 

Period:  436d.l ;     Variation:  6JM— 8JM. 

Comparison  Stars : 


Obs. 

ASV. 

ED. 

Steps 

Magn. 

e 

1 

—  14°1003 

0.0 

6.7 

a 

2 

15°  910 

6.0 

7.6 

b 

9 

14°1005 

13.0 

8.6 

c 

12 

15°  912 

16.0 

8.9 

d 

20 

—  14°1009 

21.0 

9.4 

Notes  : 

Observations  of  this  star  are  difficult  both  on  account  of  its  redness  and  of  the  length  of  its  period.  The  fol- 
lowing observations  will  give  the  ascending  branch  of  the  light  curve,  and  may  serve  as  a  supplement  to  observa- 
tions made  elsewhere. 


(140) 


1771 


R  Leporis 


Series  IV. 


141 


1800+ 

Or.  M.  T. 

Sky 

Comparisons 

I 

-II 

Mean 

2400000+ 

Remarks 

89  Oct.        15 

h 

15.5 

I 

a5  R  2b 

11.0 

11.0 

10.5 

11   291 

• 

a4R3b(H) 

10.0 

10.0 

18 

16.5 

III 

b  3  c  2  R  3  d 

18.0 

18.0 

18.0 

294 

Nov.        3 

13.5 

300) 

a  4  R  3  b 

10.0 

10.0 

10.0 

310 

14 

16.5 

u 

a  4  R  3  b 

10.0 

10.0 

9.5 

321 

a  3  R  4  b  (H) 

9.0 

9.0 

15 

16.0 

I 

a  3  R  4  b 

9.0 

9.0 

9.0 

322 

23 

16.0 

i 

a  2R5  b 

8.0 

8.0 

8.0 

330 

25 

15.5 

ii 

al  R6  b 

7.0 

7.0 

7.0 

332 

28 

15.5 

u 

a  1  R  6  b 

7.0 

7.0 

7.0 

335 

30 

14.0 

D 

a  0  R  7  b 

6.0 

6.0 

337 

Dec.         1 

14.5 

D 

e5aOR7b 

6.0 

6.0 

338 

2 

14.5 

3) 

e5al  R7b 

6.5 

6.9 

6.7 

339 

4 

14.5 

3) 

e5al  R6b 

7.0 

7.0 

7-0 

341 

11 

14.5 

ii 

e4R2a7b 

4.0 

4.0 

4.0 

348 

12 

12.5 

i 

e  4  R  2  a 

4.0 

4.0 

4.0 

349 

13 

14.3 

ii 

e5  R  1  a 

5.0 

5.0 

5-0 

350 

14 

ii 

e4R2a 

4.0 

4.0 

4-0 

351 

20 

14.3 

i 

e  4  R  2  a 

4.0 

4.0 

4-0 

357 

21 

14.5 

ii 

e4  R  2a 

4.0 

4.0 

4  0 

358 

22 

13.5 

u 

e  4  R  2  a 

4.0 

4.0 

4-0 

359 

23 

14.0 

ii 

e  3  R  3  a 

3.0 

3.0 

3  0 

360 

24 

14.0 

in 

e3  R3a 

3.0 

3.0 

3-0 

361 

26 

e  2  R  4  a 

2.0 

2.0 

2-0 

363 

90  Jan.         8 

15.0 

2005 

e4R  2  a 

4.0 

4.0 

4-0 

376 

10 

14.0 

in 

e4R  2a 

4.0 

4.0 

4-0 

378 

11 

14.0 

in 

e  4  R  2  a 

4.0 

4.0 

4-0 

379 

12 

e  4  R  2  a 

4.0 

4.0 

4-0 

380 

13 

13.0 

i 

e  4  R  3  a 

3.5 

3.4 

35 

381 

16 

13h-15h 

e  3  R  3  a 

3.0 

3.0 

3-0 

384 

17 

M 

in 

e  3  R  3  a 

3.0 

3.0 

3-0 

385 

21 

H 

ii 

e  3  R  3a 

3.0 

3.0 

3-0 

389 

22 

u 

in 

e  3  R  3  a 

3.0 

3.0 

3-0 

390 

27 

u 

D 

e  2  R  4  a 

2.0 

2.0 

20 

395 

28 

u 

D 

e  1  R  4  a 

1.5 

1.2 

14 

396 

30 

u 

ni  3)3)3) 

e  2  R  4  a 

2.0 

2.0 

2-0 

398 

Feb.       10 

u 

I 

e  1  R6  a 

0.5 

0.9 

0-7 

409 

12 

u 

II 

e  2  R  4  a 

2.0 

2.0 

2-0 

411 

13 

il 

I 

e  1  R  5  a 

1.0 

1.0 

1-0 

412 

14 

a 

II 

eOR6  a 

0.0 

0-0 

413 

15 

u 

II 

e  1  R5a 

1.0 

1.0 

1-0 

414 

16 

it 

ill 

e  1  R  4  a 

1.5 

1.2 

1-4 

415 

17 

u 

II 

e  1  R  5  a 

1.0 

1.0 

1.0 

416 

22 

a 

ill 

e  1  R  5  a 

1.0 

1.0 

1-0 

421 

Cloudy. 

Mar.        6 

u 

e  1  R  6  a 

0.5 

0.9 

0-7 

433 

8 

n 

ill 

e  1  R  6  a 

0.5 

0.9 

0.7 

435 

23 

i% 

II 

f  5  e  0  R 

450 

2610  R  Canis  Maioris          SERIES  V 

(1900)  7h  14m  56s     (+28.70);     -16°  12'.4    (— O'.ll) 

Period:  ld  3"  15m.8;     Variation:  6M— 6|M. 

Comparison  Stars. 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

b 

28 

—  15°1734 
—  15°1732 

0.0,  0.0,  0.0 
6.8,  7.4,  9.7 

5.9   HP. 

(6-8)  BD. 

Notes  : 

The  three  scales  in  the  column  "Steps"  refer  to  the  three  Minima.  A  mean  scale  would  not  represent  the 
observations  as  well  as  these  deduced  from  the  three  sets  separately.  A  glance  at  Chart  VII  of  Series  V.  of  the 
Atlas  shows  that  better  comparison  stars  than  b  could  have  been  chosen. 


(142) 


2610 


R  Canis  Maioris 


Series  V. 


143 


1800+ 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

90  Jan.        16 

14"  23"' 

a  1  R  5  b  (H) 

1.4 

1.1 

1.3 

11  384 

26 

a  2  R  4  b  (?) 

2.4 

2.2 

2.3 

33 

a  2  R  5  b  (H) 

1.9 

1.8 

1.9 

38 

a2  R  4  b 

2.4 

2.2 

2.3 

45 

a  3  R  4  b  (D) 

2.9 

2.9 

2.9 

54 

a3  R4b 

2.9 

2.9 

2.9 

57 

a  3  R  4  b  (D) 

2.9 

2.9 

2.9 

15  04 

a3  R4b 

2.9 

2.9 

2.9 

09 

a  3  R  4  b  (D) 

2.9 

2.9 

2.9 

14 

a  3  R4b 

2.9 

2.9 

2.9 

i 

16 

a  2  R  5  b  (D) 

1.9 

•  1.8 

1.9 

25 

a2R5  b 

1.9 

1.8 

1.9 

« 

a  2  R  5  b  (D) 

1.9 

1.8 

1.9 

29 

a2  R5b 

1.9 

1.8 

1.9 

31 

a  2  R  5  b  (H) 

1.9 

1.8 

1.9 

42 

a  1  R  6  b 

1.9 

1.0 

1.5 

24 

12"  21m 

III 

a2R5b 

2.2 

2.1 

2.2 

11  392 

32 

a  3  R  4  b 

3.2 

3.2 

3.2 

38 

a3  R4b 

3.2 

3.2 

3.2 

45 

a  3  R  4  b 

3.2 

3.2 

3.2 

52 

a  4  R4b 

3.7 

3.7 

3.7 

57 

a4R4b 

3.7 

3.7 

3.7 

13  05 

a  4  R  4  b 

3.7 

3.7 

3.7 

08 

a  3R4b 

3.2 

3.2 

3.2 

18 

a  4  R  5  b 

3.2 

3.3 

3.3 

25 

a  2R5  b 

2.2 

2.1 

2.2 

35 

a  2  R  6  b 

1.7 

1.8 

1.8 

38 

a  1  R  6  b 

1.2 

1.1 

1.2 

47 

a  1  R  6  b 

1.2 

1.1 

1.2 

Feb.       10 

12h  30'" 

I 

a  5  R  4  b 

5.3 

5.4 

5.4 

11  409 

32 

a  5  R  5  b  (D) 

4.9 

4.8 

4.9 

34 

a6R4b(H) 

5.8 

5.8 

5.8 

42 

a6  R3  b 

6.4 

6.4 

6.4 

44 

a  6  R  4  b  (  D) 

5.8 

5.8 

5.8 

49 

a  6  R3  b 

6.4 

6.4 

6.4 

52 

a  6  R  4  b  (D) 

5.8 

5.8 

5.8 

59 

a5  R4b 

5.3 

5.4 

5.4 

13  01 

a  5  R  5  b  (D) 

4.9 

4.8 

4.9 

05 

a4R5  b 

4.3 

4.3 

4.3 

07 

a  4  R  6  b  (D) 

3.9 

3.8 

3.9 

13 

a  4  R  6  b 

3.8 

3.8 

3.8 

* 

15 

a  4  R  6  b  (D) 

3.9 

3.8 

3.9 

21 

a  3  R  6  b 

3.3 

3.2 

3.3 

22 

a  3  R  7  b  (D) 

2.9 

2.9 

2.9 

27 

a  2  R  7  b  (?) 

2.3 

2.2 

2.3 

29 

a3R7b'(?)(D) 

2.9 

2.9 

2.9 

34 

a  2.5  R  7  b 

2.6 

2.6 

2.6 

36 

a3R7b(?)(D) 

2.9 

2.9 

2.9 

42 

a  2  R  8  b 

1.8 

1.9 

1.9 

* 

44 

a2R8b(D) 

1.9 

1.9 

1.9 

2676  U  Monocerotis  SERIES  IV 

(1900)  7h  26m  1s  (+2°.86);     — 9°  34'.0    (— OM2) 

Period:  46d.10  ;     Variation:  6|M— 7M. 

Comparison  Stars : 


Obs. 

ASV. 

BD. 

Steps 

Magn. 

a 

1 

—  10°2067 

0.0 

5.8 

b 

3 

9°2086 

5.2 

6.6 

c 

4 

9°2069 

7.2 

6.8 

e 

— 

9°2043 

10.2 

(7.0)BD. 

f 

8 

—  9  2084 

16.2 

7.8 

(144) 


2676 


U  Monocerotis 


Series  IV. 


145 


1800  + 

Gr.  M.  T. 

Sky 

Comparisons 

I 

II 

Mean 

2400000+ 

Remarks 

b 

*9  Nov.       15           16.0 

I 

a  1  U  3  b 

1.6 

1.3 

1.5 

11  322 

23 

16.0 

I 

a  2  U  2  b 

2.6 

2.6 

2.6 

330 

25 

15.5 

I 

a  2  U  3  b 

2.1 

2.1 

2.1 

332 

28 

15.5 

II 

a  3  U  2  b 

3.1 

3.1 

3.1 

335 

Dec.         1 

14.5 

D 

a  3  U  1  b 

3.6 

3.9 

3.8 

338 

2 

14.5 

D 

a4UOb 

4.6 

4.6. 

339 

4 

14.5 

a  5  b  1  U 

(6.2) 

(6.2) 

341 

*) 

11 

14.5 

II 

a  3  U  1  b  6  c 

3.6 

3.9 

3.8 

348 

12 

12.5 

I 

a  4  U  0  b  5  c 

4.6 

4.6 

349 

14 

13.0 

II 

a  2  U  3  b 

2.1 

2.1 

2.1 

351 

20 

14.3 

I 

a  2  U  3  b 

2.1 

2.1 

2.1 

357 

21 

14.5 

II 

a  3  U  2  b 

3.1 

3.1 

3.1 

358 

22 

13.3 

il 

a  2  U  3  b 

2.1 

2.1 

2.1 

359 

23 

14.0 

III 

a  1  U  4  b 

1.1 

1.0 

1.1 

360 

24 

14.0 

III 

a  1  U  4  b 

1.1 

1.0 

1.1 

361 

26 

14.5 

a  !U5b2c 

0.6 

0.9 

0.8 

363 

)0  Jan.          8 

15.0 

DDD 

a  0  U  6  b 

-0.8 

-0.8 

376 

10 

14.0 

ill 

alU4b3c 

1.1 

1.0 

1.1 

378 

11 

14.0 

III 

alU4b2c 

1.1 

1.0 

1.1 

379 

12 

13h-15h 

alUSblc 

0.6 

0.9 

0.8 

380 

. 

13 

" 

alU5b2c 

0.6 

0.9 

0.8 

381 

16 

" 

a3U3b2c 

2.6 

2.6 

2.6 

384 

17 

" 

III 

a3U4bOc 

2.1 

2.2 

2.2 

385 

21 

a 

II 

a  3  U  3  b,  c  1  b 

2.6 

2.6 

2.6 

389 

22 

u 

ill 

a  3  U  4  b,  c  1  b 

2.1 

2.2 

2.2 

390 

• 

23 

a 

II 

a3U4b,a7blc 

2.1 

2.2 

2.2 

391 

26 

u 

D 

a  3  U  4  b  1  c 

2.1 

2.2 

2.2 

394 

27 

a 

D 

a  2  U  4  b  2  c 

1.6 

1.7 

1.7 

395 

28 

<t 

D 

a  3  U  4  b  1  c 

2.1 

2.2 

2.2 

396 

30 

a 

in  DDD 

a2U4b2c 

1.6 

1.7 

1.7 

398 

Feb.         4 

" 

III]) 

alU5b2c 

0.6 

0.9 

0.8 

403 

8 

u 

a  0  U  5  b 

0.1 

0.1 

407 

Cloudy. 

10 

u 

I 

aO  U 

0.0 

0.0 

409 

12 

il 

ll 

Ul  a 

-1.0 

-1.0 

411 

13 

M 

I 

aOU7  blc 

-0.9 

-0.9 

412 

14 

(C 

II 

a0.5U7b3c2e 

-0.7 

+  0.3 

-0.2 

413 

15 

11 

II 

a  0  U  7  b  2  c 

-0.9 

-0.9 

414 

16 

a 

ill 

a  1  U  5  b  3  c 

0.6 

0.9 

0.8 

435 

17 

a 

II 

alU6clb2e 

1.1 

1.0 

1.1 

416 

22 

u 

a  3  U  4  b  1  c 

2.1 

2.2 

2.2 

421 

Cloudy. 

Mar.         6 

« 

b2cl  U2e 

8.2 

8.2. 

8.2 

433 

8 

14 

III 

b  2  c  3  U  0  e 

10.2 

10.2 

435 

9 

II]) 

b2c3elU5f 

11.2 

11.2 

11.2 

436 

23 

II 

a5U3b2c 

3.6 

3.3 

3.5 

450 

Perhaps:  a5Ul 


CONTENTS. 


List  of  the  52  Variable  Stars  Observed. 


Star 

Section 

Page 

Star 

Section 

Page 

100 

T  Ceti 

IV 

136 

4847 

S  Virginis 

III 

125 

320 

U  Cephei 

I 

6 

5157 

S  Bootis 

I 

43 

782 

R  Arietis 

I 

9 

5374 

<5  Librae 

II 

87 

806 

o  Ceti 

III 

114 

5484 

U  Corona? 

I 

46 

814 

S  Persei 

I.  Ill 

13,115 

5501 

S  Serpentis 

I 

49 

845 

RCeti 

in 

116 

5504 

S  Corona? 

I 

51 

893 

UCeti 

in 

118 

5770 

R  Herculis 

I 

54 

976 

T  Arietis 

i 

17 

5950 

W  Herculis 

I 

56 

1090 

/?  Persei 

I,  IV 

21,  138 

6044 

S  Herculis 

I 

58 

1222 

R  Persei 

i 

23 

6132 

R  Ophinchi 

III 

127 

1411 

/  Tauri 

ii 

80 

6181 

«  Herculis 

II 

89 

1771 

R  Leporis 

IV 

140 

6202 

u  Herculis 

II 

92 

1855 

R  Auriga? 

I 

26 

6512 

T  Herculis 

I 

61 

2098 

«  Orionis 

II 

82 

6758 

/3  Lyra? 

II 

94 

2100 

U  Orionis 

I 

29 

6905 

R  Sagittarii 

III' 

128 

2509 

~  Geminorum 

II 

84 

6921 

S  Sagittarii 

III 

129 

2539 

R  Canis  Min. 

I 

31 

7045 

R  Cygnj 

I 

63 

2610 

R  Canis  Mai. 

IV 

142 

7106 

S  Vulpecula? 

1 

66 

2676 

U  Monocerotis 

IV 

144 

7120 

X  Cygni 

I 

70 

3060 

U  Cancri 

I 

34 

7124 

3?  Aquila? 

II 

97 

3109 

S  Cancri 

I 

35 

7257 

R  Sagittse 

I 

72 

3477 

R  Leonis  Min. 

I 

39 

7261 

R  Delphini 

I 

76 

3825 

R  Ursa?  Mai. 

I 

40 

7468 

T  Aquarii 

III 

130 

4407 

R  Corvi 

III 

120 

7803 

[j.  Cephei 

II 

99 

4805 

W  Virginis 

III 

122 

8073 

«&  Cephei 

II 

103 

4816 

V  Virginis 

III 

124 

8230 

S  Aquarii 

III 

131 

List  of  5  Stars  not  Strictly  variable. 


Star 

Section 

Page 

Star 

Section 

Page 

Nova  Andromeda? 

I 

78 

(W)  Bootis 

II 

107 

Nova  Auriga? 

III 

133 

P  Cygni 

II 

111 

3  Serpentis 

II 

109 

(147) 


Additions  and  Corrections. 

tfote  to  page  4  :  In  case  of  a  few  variables  occurring  in  Series  IV  the  designations  and  mag- 
nitudes of  the  comparison  stars  have  been  inserted  from  the  MS.  of  that  Series,  which  is  now 
nearly  ready  for  print. 


Page 

1800  + 

Columns 

Corrections. 

10 

83 

Mar. 

31 

Mean 

insert:   >22 

53 

87 

« 

17 

« 

read  :       4.7 

113 

87 

Jan. 

28 

I 

C( 

insert:     2.0 

121 
141 

89 
90 

May 
Mar. 

3 
23 

I 

i  I 

it 

cancel  second  16 
insert:     0.0 

.5 

<L  |  MMS>E 

a  =  6" 


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